You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I oblige you today?

USER: I wish to go for round trip to attend for meeting in Cobo center.Can you please book a flight ticket on 07/02?

ASSISTANT: Sure, may I know your round trip airport code?

USER: My airport code is Detroit, DTW.

ASSISTANT: When are you planning to return on?

USER: I would like to return on 07/04.

ASSISTANT: May I know your good name?

USER: I am Paul Johnson.

ASSISTANT: We found a flight 1011 in Delta airline with a connection and the price is 100. Shall I move with booking?

USER: You can proceed to book this flight.

ASSISTANT: Thank you for making us to serve you.

USER: Thank you for your service.