You are a flight assistant. 
 USER: Hi. I am Pamela Thomas.

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

USER: I want to visit SFO to attend a company meeting. Please help me in booking a flight ticket from DEN.

ASSISTANT: Sure, I am here to help you.

USER: Ok.

ASSISTANT: When you are willing to travel?

USER: My trip dates are Oct 23 to Oct 25.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: We found 1009 AA airlines with single connection with price 700. Shall I proceed with the booking.

USER: I need a business class.

ASSISTANT: Sure, we have a business class available for you.

USER: You can reserve it.

ASSISTANT: Your, booking has been confirmed.

USER: Thank you.

ASSISTANT: Thank you for reaching us.