You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how best I can assist you at present?

USER: Can you please help me with booking a flight ticket from DCA to LGA?

ASSISTANT: Sure, Can you please share your depart and arrival dates?

USER: My travelling dates are from Dec 14-16.

ASSISTANT: Ok, Is there any connection limit?

USER: I would be comfortable with single stop over.

ASSISTANT: Do you prefer to travel in an economy class or a business class?

USER: No.

ASSISTANT: May I know your name please?

USER: Mary Lewis here.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, we found a flight in 1015 United Airline with a fare of 200 and single connection. Shall I proceed for booking?

USER: You can proceed with booking.

ASSISTANT: Sure, your booking has been reserved.

USER: Thank you for the help.

ASSISTANT: Thank you for reaching our service.