You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Can you please help me to book a flight from DTW to DEN?

ASSISTANT: Sure, could I have your journey dates, please?

USER: I want to travel on May 22 and need to return on May 24.

ASSISTANT: Do you have any preferences?

USER: I am looking for a flight with single connection.

ASSISTANT: May I know your good name?

USER: Myself Linda Nelson.

ASSISTANT: We found a connecting flight 1021 from Hawaiian airline with a fare 800. Shall I proceed?

USER: Ok, please proceed.

ASSISTANT: Your ticket has been confirmed in business class.

USER: Thank you.

ASSISTANT: Thank you for opting us.