You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you today?

USER: I am planning to have a dinner with my colleagues at St. Paul MSP, can you avail me a flight ticket under fare limit of 200?

ASSISTANT: Sure, I am here to help you, may I know your travelling dates?

USER: I will fly on 09/22 and 09/24.

ASSISTANT: Could you please help me with your  source code?

USER: My takeoff airport code is Denver DEN.

ASSISTANT: Please hold on.

USER: Sure.

ASSISTANT: There is a AA 1023 airline with fare of 100 which matches your travelling dates and price. Shall I proceed with booking?

USER: You can proceed with booking.

ASSISTANT: May I know your name?

USER: Sharon Green.

ASSISTANT: Your booking has been confirmed on name of Sharon Green.

USER: Thank you for booking.

ASSISTANT: Thank you for approaching us, have a nice day.