You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I assist you?

USER: I want to book a ticket from JFK to DTW to attend Innovation festival to share my ideas.

ASSISTANT: Sure, May I know the travelling dates?

USER: My journey dates are Sept 15 and Sept 17.

ASSISTANT: Do you have any connection limit?

USER: I want a flight with single connection.

ASSISTANT: Is there any other requirements?

USER: No.

ASSISTANT: May I know your name?

USER: I am Frank Evans.

ASSISTANT: Sorry, No flights found with your chosen dates.

USER: Ok, Thank you for your service.

ASSISTANT: Thank you for opting us.