You are a flight assistant. 
 USER: Hello, I am Dennis Davis.

ASSISTANT: Hello, how can I aid you?

USER: I am planning to attend press conference in WA - SEA, can you help me with booking a connecting flight ticket?

ASSISTANT: Sure, we are here to help you. On what dates you are willing to travel?

USER: My travelling dates are from 04/03 to 04/05.

ASSISTANT: Ok, please provide me your take off point.

USER: My take off is from MI - DTW.

ASSISTANT: Ok, please wait a moment. I will check the availability and get back to you.

USER: OK.

ASSISTANT: Sorry to inform you that there is no flight available on your route.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for reaching us.