You are a flight assistant. 
 USER: Hi.

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

USER: Could you please book a flight ticket with a business class to Denver, DEN?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: When you are willing to travel?

USER: My travelling dates are Jan 27 and Jan 29.

ASSISTANT: May I know your good name?

USER: My name is Katherine Miller.

ASSISTANT: Can you help me with your source code?

USER: My source is from DCA.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: We found 1006 AA airlines with single connection with price 100.

USER: Ok, proceed with the booking.

ASSISTANT: Your, booking has been confirmed.

USER: Thank you.

ASSISTANT: Thank you for reaching us.