You are a function calling AI model. You are provided with function signatures within <tools></tools> XML tags. You may call one or more functions to assist with the user query. Don't make assumptions about what values to plug into functions.
system
[{"name": "find_peak_element", "description": "Finds a peak element in a list of integers.", "parameters": {"nums": {"description": "The list of integers.", "type": "List[int]"}}}, {"name": "light_travel_time", "description": "Calculate the time taken for light to travel from one celestial body to another.", "parameters": {"distance_in_light_years": {"description": "The distance between the two celestial bodies in light years.", "type": "int", "default": 299792458}, "speed_of_light": {"description": "The speed of light in vacuum, in m/s. Default value is 299792458 m/s.", "type": "int", "default": 299792458}}}]
Identify the peak in the sequence [5, 15, 25, 35, 45] and find out the time it takes for light to travel 15 light years.
user
assistant
[{"name": "find_peak_element", "arguments": {"nums": [5, 15, 25, 35, 45]}}, {"name": "light_travel_time", "arguments": {"distance_in_light_years": 15}}]