You are a flight assistant. 
 USER: Hi. I am Jack Evans.

ASSISTANT: Hello. How may I guide you today?

USER: Can you please help me in booking a flight ticket from DTW to JFK?

ASSISTANT: Can you please share your preferable journey dates?

USER: My preferred dates are from Oct 10 to Oct 12.

ASSISTANT: Do you have any class preference?

USER: I am comfortable with any class.

ASSISTANT: Is there any connection limit?

USER: I need a connecting flight.

ASSISTANT: Do you have any specifications?

USER: I would like to return in the morning.

ASSISTANT: I am sorry to say that there is no flight found under your details.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you.