You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,.

USER: I am Benjamin Collins. I want to fly from NC - CLT to AZ - PHX.

ASSISTANT: How can I help you? OK, May I know your journey dates?

USER: Departure Sept/12 , Return Sept/14.

ASSISTANT: OK, Please provide your price limit and connection limit?

USER: I have a price limit 1000 with 1 connection limit.

ASSISTANT: OK, thanks for providing information. Please wait a minute.

USER: OK.

ASSISTANT: Thanks for waiting. Sorry, to tell that no flight is found as per your requirements.

USER: OK. Thank you.