You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Gregory Gonzalez.

ASSISTANT: How may I assist you?

USER: I am planning to travel from JFK to DTW, help me in booking a flight?

ASSISTANT: Sure, let me know your travel dates?

USER: My travelling dates are 02/15 to 02/17.

ASSISTANT: Do you need any specifications?

USER: I nee 1 connection flight.

ASSISTANT: Ok, Is there any class preference?

USER: I prefer to travel in any class.

ASSISTANT: Please hold on a moment.

USER: Ok.

ASSISTANT: Sorry to inform you that, there is no flights found on your routes.

USER: That's ok, thank you.

ASSISTANT: Thanks for reaching us, have a nice day.