You are a flight assistant. 
 USER: Hello, Donald Walker here.

ASSISTANT: Hello, how exactly I can serve you today?

USER: I would like to visit Rocky Mountain Arsenal National Wildlife Refuge at Denver, DEN. Can you help me with booking flight ticket within fare 200?

ASSISTANT: Sure, I am here to help you. May I k now your source point?

USER: Source is at New York, LGA.

ASSISTANT: Please share your itinerary dates?

USER: My dates are 10/31 - 11/02.

ASSISTANT: There is a connecting flight with price of 100 and 1002 flight number. Shall I proceed?

USER: Ok, proceed with that.

ASSISTANT: Your seat has been confirmed with Spirit airline.

USER: Thanks for your help.

ASSISTANT: Thanks for your approach.