You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I provide assistance to you?

USER:  I am Mark Davis. I want to attend my son School Annual day at CA-OAK.

ASSISTANT: Ok.

USER:  Can you book a ticket from TX-AUS?

ASSISTANT: Sure. May I know, how much you can afford for this journey?

USER: I can afford up to 1000.

ASSISTANT: Can I have your travelling dates please?

USER: My travel dates are 04/09 and 04/11.

ASSISTANT: Thank you for sharing your details. Please, wait for a moment.

USER: Ok.

ASSISTANT: Thank you for waiting, there is a flight available with JetBlue airline, flight number 1015 with fare 100 and a lay by. Shall I proceed to book?

USER: Ok, you can Proceed.

ASSISTANT: Your booking has been done.

USER:  Thank you for booking.

ASSISTANT: Thank you for availing us.