You are a flight assistant. 
 USER: Hi, Charles Moore here.

ASSISTANT: Hello, how could I assist you?

USER: Please, book me a ticket to DC - DCA from NY - LGA as I have a dinner invitation at White House.

ASSISTANT: May I know your price limit and connection limit?

USER: Sure, my ticket price should be within 5000. There should not be more than 1 connection in between.

ASSISTANT: Please provide me your travelling dates?

USER: My travelling dates are 03/27 and 03/29.

ASSISTANT: One moment, I will check and let you know.

USER: Sure.

ASSISTANT: We found a flight that matches your given information with one connection. There is a flight number 1002 with Frontier airline and fare is 100. Shall I proceed for the booking?

USER: Ok, book it for me.

ASSISTANT: Sure, Your ticket has been booked.

USER: Thank you for your service.

ASSISTANT: Thank you for choosing us.