You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello,. How can I assist you?

USER: I would like to book a flight ticket.

ASSISTANT: May I know your name please?

USER: Yes, I am Angela Thomas.

ASSISTANT: Could you please tell me your journey details?

USER: My journey will originate from TX-DFW on Apr 17 to NV-LAS. And I will return on Apr 19.

ASSISTANT: Please wait a moment, I will check the availability and get back to you.

USER: Sure.

ASSISTANT: Do you have any price limit and connections/.

USER: Yes, price should be within 1000 and flight should have maximum 1 connection in between.

ASSISTANT: Sorry to inform you unfortunately there is no flight found on your details. Thank you.

USER: OK, no problem. Thanks for your service.