You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: Can you help me to book a flight ticket from DCA to OAK?

ASSISTANT: Sure, can you please share your travel dates?

USER: I want to take off on 26 Aug and return on 28 Aug.

ASSISTANT: May I know your connection limit?

USER: I need a connecting flight.

ASSISTANT: Do you have any other requirements?

USER: No.

ASSISTANT: Ok, please share your name.

USER: I am Daniel Robinson.

ASSISTANT: United Airlines is having a flight with a ticket fare 100, shall I proceed with booking?

USER: Please proceed.

ASSISTANT: Your booking is done with the flight-1004 in economy class.

USER: Thanks for helping me.

ASSISTANT: Welcome.