You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how may I assist you?

USER: I want to book a ticket for a holiday trip.

ASSISTANT: Sure. could you please provide your journey details?

USER: I have to travel from Washington DC- DCA on 04/16 to New York ,NY-EWR on 04/18.

ASSISTANT: Sure,please wait for a moment, let me check for the airlines and revert to you.

USER: OK,.

ASSISTANT: Thank you for being patience, I have found a flight matching your details. The flight details are UA airline with flight number: 1009, with a price of 200. Can I proceed for booking?

USER: Yes, proceed.

ASSISTANT: Can you please tell me your name so that I can proceed for booking?

USER: I am Matthew Hernandez.

ASSISTANT: Thanks for your information. Your ticket has been booked.

USER: Thank you for your service.

ASSISTANT: Thanks for choosing us.