You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how may I be of your help?

USER: Can you help me booking a flight ?

ASSISTANT: Sure, I am here to help you. Please, share your journey details.

USER: It's from TX-DFW to TX-AUS. Travelling from 04/04 - 04/06.

ASSISTANT: OK, now may I please know your full name?

USER: I am Rebecca Young.

ASSISTANT: OK Rebecca, just hang on a moment. I will check and revert to you.

USER: Flight connection 0 with price 500.

ASSISTANT: I am very sorry to inform you that there is no flight available according to your credentials.

USER: Thanks for your assistance.

ASSISTANT: Sorry for the inconvenience.