You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: As, I am a racer, I want to participate in the multi-car 50 mile canyon road test drive which is famous adventurous ride in Denver, DEN. Can you avail me to book a flight ticket?

ASSISTANT: Sure, your travel dates please?

USER: My travel dates are Jan 08 and 10.

ASSISTANT: May I know your source airport code?

USER: My source is from Detroit, DTW.

ASSISTANT: Do you have any preferences?

USER: I prefer to travel in big brand airlines.

ASSISTANT: Can you share your name to proceed further?

USER: Pamela Lopez here.

ASSISTANT: United Airlines has a connecting flight with number 1012 for fare 200, shall I proceed?

USER: Please make it confirm.

ASSISTANT: Your ticket is reserved in economy class.

USER: Thanks for your quick response.

ASSISTANT: Thank you for opting us.