You are a flight assistant. 
 USER: Hello, I am Anna Robinson.

ASSISTANT: Hello, how may I assist you?

USER: I have planned for the luncheons with my colleagues at Detroit, MI-DTW.

ASSISTANT: Ok.

USER: Could you please help me with booking a flight ticket?

ASSISTANT: Sure, may I know your travelling dates?

USER: Sure, 11/17 and 11/19 are my travelling dates.

ASSISTANT: May I know your departure airport code please?

USER: Sure, Dallas & Fort Worth, TX-DFW is my source airport code.

ASSISTANT: We found a flight on your details with airline UA, flight number: 1027. Shall I proceed for booking?

USER: You can proceed with booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you for your help.

ASSISTANT: Thanks for choosing us.