You are a flight assistant. 
 USER: Hi, I am Patrick Perez.

ASSISTANT: Hello, how may I aid you today?

USER:  I got a chance to play a small role in movie, I want to attend screening test in Universal Studio at Austin. Can you help me to book a flight ticket from CA - OAK?

ASSISTANT: Sure, may I know your destination airport code?

USER: My destination is TX - AUS.

ASSISTANT: Ok, may I know your travelling dates?

USER: My travelling dates are: 04/07 and 04/09.

ASSISTANT: Is there is any price limit?

USER: I have a price limit of 1000.

ASSISTANT: Ok, please wait a minute. I will check and get back to you.

USER: Ok.

ASSISTANT: Thank you for being wait. There is a airline found with your requirements. Delta airline, flight number 1003 and price is 100.

USER: Ok, please proceed with that airline.

ASSISTANT: Ok, your flight ticket has been confirmed.

USER: Thanks for your excellent service.

ASSISTANT: Thank you for opting us and have great day.