You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I be your helping hand for the day?

USER: I am Kathleen Miller. Can you book a flight ticket from ORD to OAK to attend a convocation meeting?

ASSISTANT: Sure, do you have any price limit?

USER: I can spend up to 1000.

ASSISTANT: Help me with the travelling dates?

USER: I would like to travel on 04/04 and return back on 04/06.

ASSISTANT: Please be on hold.

USER: Sure.

ASSISTANT: Thank you for your time, we found a flight from an airline UA with the number 1013. Shall I proceed to book?

USER: Yes, please proceed.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you for your help in my ticket booking.

ASSISTANT: Thank you for opting us.

USER: Welcome.