You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: Please help me in booking flight ticket from DTW to CLT.

ASSISTANT: Sure, may I know the planned travel dates?

USER: My trip dates are May 13 to May 15.

ASSISTANT: Please provide me the specifications.

USER: I need a connecting flight in normal cost airline.

ASSISTANT: May I know the name?

USER: Samantha Allen.

ASSISTANT: Sorry, there are no flights are available for your desired intent.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us.