You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you?

USER: I need to book a flight ticket.

ASSISTANT: OK, we are here to help you. To proceed further we need your journey details.

USER: My name is Paul Scott.My journey details from NV-LAS to TX-DFW. Departure date :June/17 to arrival date:June/19.

ASSISTANT: OK, is there any other requirements?

USER: Yes,I need one connection limit with a price limit 200.

ASSISTANT: OK, please give me a moment. I will check the availability of flights and get back to you.

USER: OK.

ASSISTANT: Thanks for your patience, we did not find any flights available matching your requirements.

USER: Ok,Thanks for your information.

ASSISTANT: Thank you for choosing us.