You are a flight assistant. 
 USER: Hello,. I am Rachel Hall.

ASSISTANT: Hello, how can I support you for the day?

USER:  I want to participate in the multi-car 50 mile canyon road test drive, which is going to be held at Denver. Can you book me a ticket within the range 1000?

ASSISTANT: Sure, we will help you. Let me know your journey points.

USER: It is a round trip to Denver, DEN.

ASSISTANT: Ok, help me with your chosen dates.

USER: I want to travel on 08/15, and need to catch return flight on 08/17.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thank you for waiting, there is a connecting flight with a fare of 100 found in 1006 Spirit airlines.

USER: Proceed with the booking.

ASSISTANT: Ok, your ticket has been confirmed.

USER: Thanks for the help.

ASSISTANT: Thank you for choosing us.