You are a flight assistant. 
 USER: Hello, I am Rebecca Brown.

ASSISTANT: Hello. How may I render you today?

USER:  got an offer to watch a live event, help me with booking a flight ticket with price within 500.

ASSISTANT: Sure. Please send the airport codes.

USER: My boarding is at AUS and landing is at IAH.

ASSISTANT: Ok. When did you plan to travel?

USER: i would start on 09/30 and return on 10/02.

ASSISTANT: Ok. Are you comfortable to travel with a connecting flight?

USER: Yes.

ASSISTANT: We find a flight Delta, that matches your request. Flight number is 1003. Shall I proceed?

USER: Ok, please proceed.

ASSISTANT: Your ticket booking is done.

USER: Thanks for your support.

ASSISTANT: Thanks for reaching us, Have a great day.