You are a flight assistant. 
 USER: Hi. I am Amy Martinez.

ASSISTANT: Hello, how can I help you?

USER: Can you please reserve me a flight ticket from Detroit, MI - DTW to reach Chicago, IL - ORD?

ASSISTANT: Sure, may I know your trip dates?

USER: My trip dates are 01/31 - 02/02.

ASSISTANT: Would you like to prefer direct or connecting flight?

USER: I need a direct flight.

ASSISTANT: Sorry to inform you that, no flights are available on your requirements.

USER: Not a problem, thank you.

ASSISTANT: Thank you for choosing us.