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

ASSISTANT: Hello, how can I provide assistance to you?

USER: Could you please check a connecting flight to Denver, DEN?

ASSISTANT: Sure, do you have price limit?

USER: I can afford an amount of 200.

ASSISTANT: Could you please share your trip dates?

USER: I would like to go on 09/04 and return on 09/06.

ASSISTANT: Can I know your boarding point airport code?

USER: I have to fly from Washington, IAD to attend the business meeting with my clients.

ASSISTANT: Please, wait for a moment.

USER: Sure.

ASSISTANT: Thank you for being patience.

USER: Ok.

ASSISTANT: I am here to inform you that, there is a flight available with Spirit airline, flight number 1001 with fare 200 and a lay by.

USER: Ok. You can proceed to book.

ASSISTANT: Your reservation has been confirmed.

USER: Thank you for aiding me.

ASSISTANT: Thank you for reaching us.