You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am planning to book a flight ticket to DTW from PHX, can you please help me out?

ASSISTANT: Ok, may I know your travel dates?

USER: Sure, my planned travelling dates are Dec 22 and Dec 24.

ASSISTANT: Let me know your connection limit.

USER: Sure, I am looking for a flight with 1 connection.

ASSISTANT: May I know your name?

USER: Sure, my name is Paul Robinson.

ASSISTANT: Sorry, no flight is running on your route.

USER: It's ok, thank you for the information.

ASSISTANT: Thanks for reaching us.