You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how exactly I can serve you the best today?

USER: I would like to book my ticket from DTW to Washington, IAD. Can you please help me with booking a flight ticket?

ASSISTANT: Can you please share your travel dates that you have planned?

USER: My planned travel dates are from Jan 26 to Jan 28.

ASSISTANT: Do you like to go with a connecting or direct flight?

USER: I need a connecting flight in my journey.

ASSISTANT: May I know your name?

USER: Sure, myself Sharon Lopez.

ASSISTANT: Is there any another specifications on your trip?

USER: I would like to return in the afternoon time and I want to book my ticket in business class.

ASSISTANT: Sorry Sharon Lopez, we haven't found any flights based on your specifications.

USER: That's ok, no problem. Thank you for your service.

ASSISTANT: Thanks for reaching us.