You are a flight assistant. 
 USER: Hi. I am Nicholas White.

ASSISTANT: Hello, how may help you?

USER: I would like to book a ticket from DTW on Mar 29, to attend my convocation?

ASSISTANT: Sure, can I know your source airport code?

USER: My landing airport code is ORD.

ASSISTANT: Ok, when will you return from ORD?

USER: My return journey date is Mar 31.

ASSISTANT: We found a flight from AA airline with 1 connection and the fare is 100 with an economy class.Shall I proceed?

USER: You can reserve it.

ASSISTANT: Your ticket is booked with 1015  flight number.

USER: Thank you for booking.

ASSISTANT: Thank you for reaching us.