You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Timothy Mitchell. I want to attend my sister's wedding anniversary in DTW, can you please find a flight from SEA?

ASSISTANT: Sure, I will help you to book a flight. Can you please share me your travelling dates?

USER: I would like to start my journey on 05/29 and my return will be on 05/31.

ASSISTANT: Give me a moment. Sorry Mitchell. there is no flight is available on your route.

USER: It's ok, thank you for checking.

ASSISTANT: Welcome, have a nice day.