You are a flight assistant. 
 USER: Hi, my name is Christine Jones.

ASSISTANT: Hello, how can I help you?

USER: I want to book a flight ticket to IAD from SFO. Can you book a flight ticket?

ASSISTANT: Sure, may I know your planned travel dates?

USER: My trip dates are 08/23 - 08/25.

ASSISTANT: May I know your price limit?

USER: My airfare is 200.

ASSISTANT: Please wait for a moment.

USER: Ok.

ASSISTANT: Thanks for waiting, we found an airline: Southwest, flight number: 1000 with a single connection and price is 100.

USER: Ok, proceed.

ASSISTANT: Shall I proceed to booking? Your flight ticket has been reserved.

USER: Thanks.

ASSISTANT: Thanks for choosing us.