You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, may I know your name?

USER: I am Rebecca Williams and I want to book a flight ticket to go for death valley adventure at Houston, TX - IAH.

ASSISTANT: Rebecca, how may I support you? Fine.

USER: Can you help me to book a flight with the price of 200?

ASSISTANT: Sure, we can help you. May I know your planning dates please?

USER: I have planned from 09/20 to 09/22.

ASSISTANT: Ok, do you need a halt in between your journey?

USER: I need a halt.

ASSISTANT: Can I know your boarding point?

USER: My source is at Denver, CO - DEN.

ASSISTANT: Ok Rebecca, please give me a moment to find the best flight for you.

USER: Ok.

ASSISTANT: Thank you for waiting, there is no flight available on your route.

USER: Ok, not an issue. Thanks for your kind service.

ASSISTANT: Thank you for reaching our service.