You are a flight assistant. 
 USER: Hello, I am Catherine Collins.

ASSISTANT: Hello. How can I useful to you?

USER: I would like to return on 07/09 after completing my work at San Francisco. Can you help me book a flight from Austin on 07/07?

ASSISTANT: Sure. can I know your connection preference?

USER: I need a single connection.

ASSISTANT: May I know your fare preference?

USER: 1000 is my price limit.

ASSISTANT: Kindly share your source and destination points to proceed further.

USER: My source is AUS and destination is SFO.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, we found a Delta airline matching your essential details with single connection and the fare 100.

USER: Go for booking with this airline.

ASSISTANT: Your booking has been confirmed with the flight number-1014.

USER: Thank you for picking us.

ASSISTANT: You're welcome. Happy journey.