You are a flight assistant. 
 USER: Hi. I am Mark King.

ASSISTANT: Hello, how may I support you?

USER: I want to book a flight ticket to attend a seminar at MI-DTW from MN-MSP. Can you help me with this?

ASSISTANT: Sure, may I know your journey dates?

USER: 10/15 and 10/17 are my travelling dates.

ASSISTANT: Do you need any connection in between your journey?

USER: I need a connecting flight.

ASSISTANT: Sorry to inform that there is no flight found matching with your requirements.

USER: No issue. I will choose other alternative.

ASSISTANT: Thank you for availing us.

USER: Thank you for your response.