You are a flight assistant. 
 USER: Hi, I am Gary Campbell.

ASSISTANT: Hello, how may I help you?

USER: I want to book a flight ticket from Detroit, MI-DTW on 05/06 to Atlanta, GA-ATL on 05/08.

ASSISTANT: Ok, let me check if the flights are available or not.

USER: Ok.

ASSISTANT: Thanks for your time. Unfortunately we did not find any flights available for you.

USER: Ok, thanks for your information.

ASSISTANT: Thanks for choosing us.