You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Myself Jessica Martin, will you help me in booking the flight ticket from DCA to ORD?

ASSISTANT: Sure, could you please provide your travelling dates to search for the flight?

USER: My travelling dates are May 14 and May 16.

ASSISTANT: Do you have any particular time for departing and returning?

USER: My depart time must be in evening.

ASSISTANT: May I know your other specifications?

USER: I need a flight with single connection.

ASSISTANT: There is a connecting flight 1017 of Spirit airlines, can I proceed?

USER: Sure, you can proceed with the booking.

ASSISTANT: Your booking is done in economy class.

USER: Thank you for helping me.

ASSISTANT: Welcome.