You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you at this moment?

USER: I am planning to book a ticket from DTW to DCA. Can you please help me out?

ASSISTANT: Sure, can you please share your journey dates?

USER: I am planning to travel on June 09 and return back on June 11.

ASSISTANT: Do you prefer a connecting or direct flight?

USER: I am looking for a connecting flight.

ASSISTANT: Please let me know your name.

USER: My name is Anthony Edwards.

ASSISTANT: Are there any more specifications?

USER: I am looking for a business class.

ASSISTANT: Sorry, we could not find any flights matching your credentials.

USER: That's fine, thank you for your service.

ASSISTANT: Thank you for approaching us.