You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I support you?

USER: Please help me to book a flight ticket from LGA to DTW.

ASSISTANT: Sure, we are glad to help you. Can you please let me know your travelling dates?

USER: My trip dates are from July, 28 to July, 30.

ASSISTANT: Do you have any stopover in between journey?

USER: I need a single connecting flight.

ASSISTANT: Is there any class preference?

USER: I prefer a business class to fly.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: May I know your good name?

USER: I am Thomas Phillips.

ASSISTANT: Thanks for providing details, no flights are available on your journey dates.

USER: Thank you for your information.

ASSISTANT: Thank you for opting us.