You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: Please help me out in booking the ticket from DTW to PHX.

ASSISTANT: May I know your travel dates?

USER: My trip dates will be Dec 17 to Dec 19.

ASSISTANT: Do you have any connecting limit preferences?

USER: I need a connecting flight.

ASSISTANT: Is there any other concern?

USER: No.

ASSISTANT: May I know your name please?

USER: Eric Robinson.

ASSISTANT: No flights found as per your preferences at the moment.

USER: That's ok, thank you.

ASSISTANT: Thank you for choosing us.