You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: Can you please help me to book flight ticket from PHX to IAD?

ASSISTANT: May I know your travelling dates?

USER: My trip dates are May 31 and June 2.

ASSISTANT: Is there any connection limit?

USER: I prefer a direct flight.

ASSISTANT: Do you have any other requirements?

USER: No.

ASSISTANT: May I know your good name?

USER: I am Thomas Thomas.

ASSISTANT: United Airlines providing direct flight in the business class with fare 600, can I proceed?

USER: Yes, you can proceed.

ASSISTANT: Your ticket has been confirmed with flight number 1017.

USER: Thank you.

ASSISTANT: Thank you for opting us.