You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I help you?

USER: I want to book a flight ticket to attend a business meeting with my client at DEN, can you help me with booking from IAD?

ASSISTANT: Sure, May I know your travelling dates?

USER: My travelling dates are Dec 02 and Dec 04.

ASSISTANT: Do you have any connection limit?

USER: I need a connecting flight.

ASSISTANT: Any other preferences?

USER: No.

ASSISTANT: May I know your name?

USER: I am Patrick Martin.

ASSISTANT: You have a connecting flight 1000 in AA airlines and price 100, Shall I proceed?

USER: Please proceed.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you.