You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I am Patrick Parker. I am planning to meet my cousin in Philadelphia, so please help me in booking a flight ticket from MI - DTW.

ASSISTANT: Sure, when are you willing to travel?

USER: I want to fly on 11/07 and return on 11/09.

ASSISTANT: Ok, let me know your destination airport code?

USER: My destination code is MI - DTW.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting, no flights found with your given details.

USER: Not an issue. Thank you.

ASSISTANT: Thank you for opting us.