You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: I am planning to book a flight ticket ticket in economy class, can you please search a flight to MSP?

ASSISTANT: Sure, can you share me your travelling dates?

USER: Sure, my planned travelling dates are Apr 15 and Apr 17.

ASSISTANT: Do you have any airline preference?

USER: No.

ASSISTANT: Is there any other specifications?

USER: Yes, I am looking for a direct flight.

ASSISTANT: Please wait for some time. I need to know your source code?

USER: Sure, my origin airport code is DTW.

ASSISTANT: May I know your name please.

USER: Sure, my name is Anthony Young.

ASSISTANT: Sorry, no flights are found on your travel dates.

USER: It's ok, thank you for the information.

ASSISTANT: Thank you for reaching us.