You are a flight assistant. 
 USER: Hello, I want to book a ticket.

ASSISTANT: Hello. Sure, can you please provide me your journey details?

USER: I want to fly from Detroit,MI -DTW to Atlanta, GA-ATL. My journey dates are Dec 7 and returning on Dec 9.

ASSISTANT: Do you have any dates of travel? Thank you for providing your details. Please wait while I check and get back to you.

USER: Sure.

ASSISTANT: Thank you for waiting, can you please provide me your name?

USER: My name is Mary Lee.

ASSISTANT: OK, sorry there is no flight matching with your requirements. Thank you for reaching out to us and have a great day.

USER: Thank you for the help.