You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you for the day?

USER: I planned to meet my cousin in DTW, can you please help me to book a flight ticket from SEA?

ASSISTANT: When you are willing to travel?

USER: I prefer to travel on Oct 18 and Oct 20.

ASSISTANT: Do you have any class preference?

USER: I would like to travel in business class.

ASSISTANT: Do you have any connection limit?

USER: I prefer to travel in a connecting flight.

ASSISTANT: May, I know your good name?

USER: I am Michael Anderson.

ASSISTANT: Sorry, we found no flights on your given dates.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you for reaching us.