You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you at this moment?

USER: I am Daniel King. Can you book a connecting flight from DCA to JFK?

ASSISTANT: Sure, may I know your travel dates please?

USER: My planned travel dates are Dec, 15 and Dec, 17.

ASSISTANT: Do you have any connection limit?

USER: I already mentioned above.

ASSISTANT: Sorry, may I know about your class preference?

USER: I am comfortable with any class.

ASSISTANT: Do you have any airline preference?

USER: No.

ASSISTANT: Let me know about your other preferences, if any.

USER: My depart time should be at afternoon.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Spirit airlines is providing you the connecting flight, depart time is at 15 PM and arrival is at 21 PM. Shall I proceed?

USER: Please proceed.

ASSISTANT: Your ticket has been reserved with flight-1017.

USER: Thank you.

ASSISTANT: Thank you for reaching us.