You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, May I know your name?

USER: Myself Gary Walker.

ASSISTANT: How can I guide you Walker for today?

USER: I want to travel from Denver to New York, can you find flight with flight in route?

ASSISTANT: Sure, I help you about.

USER: My location codes are from DEN to LGA.

ASSISTANT: Can you provide travelling dates?

USER: From 12/04 till 12/06. I need 1 connection limit.

ASSISTANT: Sorry for the inconvenience, there is no flight to your destination. Thank you for contacting us.

USER: That's ok. Thank you.