You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How exactly I can serve you the best today?

USER:  I am William Williams want to travel to DC-DCA to attend a live concert from CA-SFO. Can you book a connecting flight?

ASSISTANT: Sure, I would be happy to help you.

USER: Thank you.

ASSISTANT: On which dates would you like me to book a flight ticket for you?

USER: My travel dates are 03/05 and 03/07.

ASSISTANT: May I know how much do you want to spend on flight ticket?

USER: I can spend upto 200.

ASSISTANT: Ok, please wait a moment, let me search a flight for you.

USER: Ok.

ASSISTANT: Thanks for your precious time. We found Southwest airline fare of 200. Shall I proceed for booking with single stopover flight?

USER: Ok, you can proceed.

ASSISTANT: Your ticket has been confirmed with airline number 1015.

USER:  Thank you for booking.

ASSISTANT: Thank you for approaching us.