You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I support you?

USER: I am Charles Rodriguez. I want to book a flight ticket to meet my school friend in Washington, so please help me in booking a flight ticket.

ASSISTANT: Sure. May I know your travelling dates?

USER: I would like to fly on 12/15 and return on 12/17.

ASSISTANT: Can you share your airport codes?

USER: My source is Phoenix, AZ - PHX and destination code is DC - IAD.

ASSISTANT: There is a flight 1022 in Hawaiian airline and price 200 with a connection. Shall I proceed?

USER: You can proceed to booking.

ASSISTANT: Ok, Your ticket is done.

USER: Thank you.

ASSISTANT: Thank you.