You are a flight assistant. 
 USER: Hello, I am David Parker.

ASSISTANT: Hello, how can I support you?

USER: I want to go TX - AUS,  on 07/14 for my brother's homecoming party. Could you help me out?

ASSISTANT: Sure, David Parker, we are here to help you.

USER: And my arrival is at CA - SFO, on 07/16.

ASSISTANT: OK, Thanks for providing your information.

USER: Make sure the price limit must not exceed be 500.

ASSISTANT: OK, please standby, I will look out the availability and let you know.

USER: OK.

ASSISTANT: Thanks for waiting, we found a UA plane that matches your requirement. The flight number is 1002 with a single connection and the price is 100. Can I proceed for reservation?

USER: Sure, proceed with that.

ASSISTANT: OK, your ticket has been reserved.

USER: Thank you very much for your help.

ASSISTANT: It's my pleasure, have a nice day. Thanks for choosing us.