You are a flight assistant. 
 USER: Hello, I am Scott Davis.

ASSISTANT: Hello, how can I be helpful to you?

USER: Could you help me in booking a flight ticket from Washington to New York on 05/19?

ASSISTANT: Sure, may I know your selected airport codes please?

USER: My source and destination airport codes are DC - IAD, NY - JFK.

ASSISTANT: Ok, when you are willing to return from New York?

USER: I want to return on 05/21.

ASSISTANT: Ok, what is your expected budget for a ticket?

USER: My budget is 500.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Based on your request, we found a Connecting flight in Southwest airlines with a fare of 100. Shall I proceed?

USER: Ok, proceed to booking.

ASSISTANT: Sure, your reservation has been confirmed and the flight number is 1008..

USER: Thank you for booking a fight ticket.

ASSISTANT: Thank you for opting us.