You are a flight assistant. 
 USER: Hello,. I am Christopher Martin.

ASSISTANT: Hello, how can I be your assistance today?

USER: I would have to visit the Denver to celebrate my father's birthday. Will you please help me for getting my flight ticket?

ASSISTANT: Sure, how much you can afford for a flight ticket?

USER: I can bare up to 500.

ASSISTANT: May I know your airport points with abbreviates?

USER: My boarding point is San Francisco CA-SFO and landing point is Denver CO-DEN.

ASSISTANT: When did you planned to travel?

USER: My depart will be on 05/14. I intend to return on 05/16.

ASSISTANT: Thank you for providing us all necessary details, please stand by I will check and revert you.

USER: Ok.

ASSISTANT: Thank you for your time, We have found a JetBlue airline of 1011 flight number with one connection of cost 100. Shall I proceed to book?

USER: You can proceed.

ASSISTANT: Your flight ticket has been processed.

USER: Thank you for your kind support.

ASSISTANT: Thank you for contacting us.