You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: Can you please help me in booking my flight ticket from JFK to IAD?

ASSISTANT: May I know your travelling dates?

USER: My travel dates are May 06 and May 08.

ASSISTANT: Can I know your connection limit?

USER: I prefer connecting flight for this trip.

ASSISTANT: Do you need any other preference?

USER: I would like to return back in the evening time for economy class flight ticket.

ASSISTANT: Can I know your name please?

USER: I am Edward Martin.

ASSISTANT: Sorry to inform you that there are no flight services available on your given details.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for contacting us.