You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Christopher Hill. I am planning to book a ticket to attend a meeting at SFO. Can you please help me out to book a flight ticket from DCA?

ASSISTANT: Sure, I am glad to help you. Can you please tell me your travel dates?

USER: I would like to travel on 07/06 and return back on 07/08.

ASSISTANT: Ok, please give me a minute. I will search the flight for you.

USER: Sure, I will wait for your reply.

ASSISTANT: I found a Delta airlines with a ticket fare of 100 and there is a 1 stop over in your journey in the flight 1024, can I confirm your flight ticket booking?

USER: That's fine, please proceed the booking.

ASSISTANT: Ok, I have booked your ticket with the above mentioned flight. Have a happy journey.

USER: Thank you for your service.

ASSISTANT: Thank you for choosing our travel agency.