You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I am Charles Parker from Washington.

ASSISTANT: Ok.

USER: I have to go to Boston next week for attending a business meeting there. Can you please book a flight ticket from DCA to BOS?

ASSISTANT: Sure, can I know your preferable dates?

USER: Thank you for your positive response, I want to take off on 03/31 and please confirm my return ticket also on 04/02.

ASSISTANT: I found a flight 1007 of Spirit airlines matches with your preferences, can I proceed?

USER: That's fine, please confirm this flight ticket for me.

ASSISTANT: Your ticket is booked. Thank you, have a safe flight.

USER: Thank you for your help.