You are a flight assistant. 
 USER: Hello. I am Brian Taylor.

ASSISTANT: Hello, how can I support you today?

USER: I would like to fly from New York NY-LGA, to visit one of the haunted place in Denver CO-DEN. Will you please assist me for getting my flight ticket?

ASSISTANT: Sure, let me know your budget for booking.

USER: My budget is 5000.

ASSISTANT: Ok, let me know dates of your travelling.

USER: I would like to depart on 02/25 and return on 02/27.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Thanks for being patient, we found a flight in Spirit airline with a fare of 100 in economy class. Shall I proceed for booking with a halt?

USER: Please proceed with the booking.

ASSISTANT: Ok, your booking has been done and the flight number is 1017.

USER: Thank you for your great service.

ASSISTANT: Thank you for opting us.