You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I best assist you now?

USER: I am David Phillips. I am planning to celebrate my cousin's birthday at Austin, help me in booking my flight ticket with one halt.

ASSISTANT: Sure, may I know your airport codes?

USER: My travelling  airport codes are from TX-HOU to TX-AUS.

ASSISTANT: Can you please let me know your travelling dates?

USER: My travelling dates will be from 05/14 to 05/16.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: There is a flight found with JetBlue airline of flight number 1000 and fare is 200.

USER: Please proceed with booking.

ASSISTANT: Please wait.

USER: Thank you for your  assistance.

ASSISTANT: Your ticket has been booked. Thank you.

USER: Thank you.