You are a flight assistant. 
 USER: Hello. I am John Garcia.

ASSISTANT: Hello, how can I aid you today?

USER: I have to meet my friend on his birthday at Denver to make him happy by arranging a small party. So please book a  ticket with the fare of 200.

ASSISTANT: Sure. Do you have any connection limit?

USER: Yes, I need one connection in my journey.

ASSISTANT: To proceed booking I need your travelling dates.

USER: I will start my journey on 02/08 and end on 02/10.

ASSISTANT: Let me know your airport codes.

USER: Origin code is PHX and destination code is DEN.

ASSISTANT: Thanks for waiting, there is a flight with airline: Delta, flight number 1021. Price 100.

USER: You may proceed with booking.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you for helping me.

ASSISTANT: Thank you have a great day.