You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Donald Walker. I am planing to visit my office meeting at MSP. Can you please help me out to book a ticket for me?

ASSISTANT: Sure, may I know your trip dates? Sure, may I know your source code?

USER: I would like to travel on 03/14 and return back on 03/16.

ASSISTANT: Ok, please tell me your source code.

USER: My source is DEN.

ASSISTANT: The Delta airline with flight number 1002 is available having price as 100 and connection as 1. Shall I proceed?

USER: Yes, you can proceed the booking.

ASSISTANT: Ok, your reservation is done.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us, have a great day.