You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I want to book a flight ticket from JFK to IAD to meet my friends.

ASSISTANT: May I know your desired travel dates please?

USER: My travelling dates are July 6 and July 8.

ASSISTANT: Can I know your name please?

USER: I am Matthew Adams.

ASSISTANT: Do you have any specifications?

USER: I want to return in the afternoon.

ASSISTANT: Do you have any other specifications?

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

ASSISTANT: Sorry to say, there is no flight on your desired travel dates.

USER: No worries, thank you for the information.

ASSISTANT: Thank you for opting us.