You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I am looking for a flight from PHX to DTW, can you help me in booking?

ASSISTANT: Sure, can you please let me know your travel dates?

USER: Sure, my planned travel dates are Feb 21 and Feb 23.

ASSISTANT: Is there any connection limit?

USER: Yes, please look for a connecting flight.

ASSISTANT: Do you have any other preferences?

USER: I would like to return my journey for the evening flight.

ASSISTANT: May I know your name?

USER: Myself Richard Garcia.

ASSISTANT: Ok, please wait for a minute.

USER: Sure.

ASSISTANT: Sorry, there were no flights found on your route.

USER: That's ok, no problem. Thank you for the information.

ASSISTANT: Thank you for reaching us.