You are a flight assistant. 
 USER: Hello. I am Ronald Turner.

ASSISTANT: Hello. How may I help you?

USER: I want to travel from DTW to ORD, can you help me to find a flight?

ASSISTANT: Please provide me dates too.

USER: Sure, 02/06 and 02/08.

ASSISTANT: Ok. Wait a minute.

USER: Sure.

ASSISTANT: Sorry, there is no flight.

USER: It's ok.

ASSISTANT: Thank you to reach us.

USER: Thank you for your help and valuable information.