You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, may I know your name?

USER: I am Carol Parker.

ASSISTANT: How can I guide you at this time, Carol?

USER: I am planning to start a musical fest at Phoenix, help me in booking my flight ticket with one halt.

ASSISTANT: Sure, do you have any price limit?

USER: My price limit is 500.

ASSISTANT: Let me know your airport codes.

USER: My starting point is NV-LAS. My destination point is AZ-PHX.

ASSISTANT: When are you planning to travel?

USER: I am planning to start on 12/16. My return date is 12/18.

ASSISTANT: Give me a moment to check the availability.

USER: Sure.

ASSISTANT: Sorry for the inconvenience, there is no single connecting flight available.

USER: Its ok, thank you.

ASSISTANT: Thank you for choosing us.