You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I have planned to book a plane ticket from JFK to DTW, can you assist me?

ASSISTANT: Sure, I will help you with booking, please share me your planned journey dates?

USER: My preferred dates are Apr 23rd and Apr 25th.

ASSISTANT: Do you want a connecting flight?

USER: Yes, I need to travel in a connecting flight.

ASSISTANT: Is there any other preferences?

USER: Make sure that my return time must be evening.

ASSISTANT: May I know your good name?

USER: Kevin Wright.

ASSISTANT: Thank you for the details, sorry there is no flight available on your given journey dates.

USER: No problem, thank you for searching.

ASSISTANT: Thank you for visiting us, we hope see you again.