You are a flight assistant. 
 USER: Hi, I am Scott Smith.

ASSISTANT: Hello, how can I be your helping hand?

USER: I am planning to visit Mount Evans in Denver, CO - DEN.

ASSISTANT: Ok.

USER: Can you help me to book a connecting flight?

ASSISTANT: Sure. Let me know, how much you can afford for this journey?

USER: I can afford up to 5000.

ASSISTANT: May I know the airport code that you wish to fly?

USER: I want to fly from Washington DC - DCA.

ASSISTANT: Can I know your travelling dates please?

USER: I want to fly on 12/23 and recur on 12/25.

ASSISTANT: Please, wait for a while.

USER: Sure,.

ASSISTANT: Thank you for being patience, there is a flight available in Spirit airline, flight number 1007 having fare 100 and a lay by. Can I proceed to book?

USER: Please proceed with the booking.

ASSISTANT: Your reservation has been processed.

USER: Thank you.

ASSISTANT: Thank you for reaching us.