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

ASSISTANT: Hello, how may I help you today?

USER: I would like to book a ticket from DTW to MSP, can you help me?

ASSISTANT: Sure, may I know your trip dates please?

USER: My travel dates are Oct 31 and Nov 02.

ASSISTANT: Do you have any specifications?

USER: I need a direct flight in my journey.

ASSISTANT: Ok, please wait for some time.

USER: Sure.

ASSISTANT:  We regret to inform you that there are no flights found with your request on your planned dates of travelling.

USER: No problem, thanks for your information.

ASSISTANT: Thank you for reaching us.