You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Please help me to book a flight ticket from DTW to SEA?

ASSISTANT: Sure, I am willing to help you for this. When are you planning your trip?

USER: My travelling dates are Jan 5 to Jan 7.

ASSISTANT: May I know your name please?

USER: Amanda Hernandez here.

ASSISTANT: Is there any connection limit?

USER: I need a direct flight.

ASSISTANT: At what time are you planning to depart and return?

USER: I want to return in the afternoon.

ASSISTANT: Is there any other requirements?

USER: I prefer economy class.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Sorry for inconvenience, no flights are found with your specifications.

USER: No problem, thank you.

ASSISTANT: Thank you very much for approaching our agency.