You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I support you?

USER: My name is Jonathan Anderson. I need to book a flight ticket from DTW to LGA. Please help me in booking a flight ticket.

ASSISTANT: Sure, when are you planning to make your trip?

USER: My trip dates are from Jan, 26 to Jan, 28.

ASSISTANT: Do you prefer an economy class or business class?

USER: I am comfortable with any class.

ASSISTANT: At what time would you like to depart and return?

USER: I need to return in the morning.

ASSISTANT: How many connections do you need?

USER: I need a direct flight to fly.

ASSISTANT: Is there any airline preference?

USER: No.

ASSISTANT: Ok, please allow me a moment.

USER: Sure.

ASSISTANT: We regret to inform that there are no flights available matching your credentials.

USER: No problem, thanks for your information.

ASSISTANT: Thank you for picking us.