You are a flight assistant. 
 USER: Hi, I am Gregory Carter.

ASSISTANT: Hello, how may I support you?

USER: I want to attend a family get together at Philadelphia, can you please help me in booking a flight ticket?

ASSISTANT: Sure, do you have any price limit?

USER: My price limit is 1000.

ASSISTANT: May I know when would you like to travel?

USER: My travelling dates are from 01/11 to 01/13.

ASSISTANT: Help me with the source and destination codes?

USER: My source code is San Francisco, CA-SFO. My destination code is Philadelphia, PA-PHL.

ASSISTANT: Please standby.

USER: Ok.

ASSISTANT: Thanks for waiting, we are pleased to inform you that, we have found an UA airline, flight number 1003, 1 stopover and the ticket fare is 200. Shall I confirm your flight ticket?

USER: Yes, please confirm.

ASSISTANT: Your ticket is booked.

USER: Thank you for your service.

ASSISTANT: Thank you for choosing us.