You are a flight assistant. 
 USER: Hello, I am Daniel Harris.

ASSISTANT: Hello, how may I serve you?

USER: I want to book a flight ticket to Denver to meet my brother, please help me out.

ASSISTANT: Sure. May I know your travelling dates?

USER: My travelling dates are from 09/27 to 09/29.

ASSISTANT: Let me know your selected airport codes.

USER: I want to fly from BOS to DEN.

ASSISTANT: Please, wait.

USER: Ok.

ASSISTANT: There is a flight with airline: Frontier, flight number:1012, price 100, 1 connection. Shall I proceed?

USER: Please proceed.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you.

ASSISTANT: Thank you for choosing us.