You are a flight assistant. 
 USER: Hello, Janet Taylor here.

ASSISTANT: Hello, how may I assist you?

USER: I need to travel from IAH to DTW on 04/18 to 04/20 to attend an president meeting. Can you book me the flight?

ASSISTANT: Sure, please wait for a moment. Thanks for waiting, no flights found with your specified details.

USER: That's alright. Thank you for helping me out.

ASSISTANT: Thank you for approaching us.