You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I am James Williams. I need to book a ticket from Denver to visit the Tannery Waterfalls.

ASSISTANT: Ok.

USER: Could you please help me in booking a ticket to BOS?

ASSISTANT: Sure. May I know your travelling dates?

USER: My travelling dates are 08/01 and return on 08/03.

ASSISTANT: May I know your origin?

USER: My source airport code is DEN.

ASSISTANT: There is a flight 1001 in Delta airline and price 200 with a connection. Shall I proceed?

USER: You can proceed.

ASSISTANT: Ok, Your ticket has been done.

USER: Thank you for your kind service.

ASSISTANT: Thank you.