You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am Michelle Taylor, want to travel from LAX to DTW. Please help me in booking my ticket.

ASSISTANT: Can I know your travel dates?

USER: Sure, my travelling dates are from 06/27 to 06/29.

ASSISTANT: Please give me a minute.

USER: Sure.

ASSISTANT: Sorry Taylor, there is no flight available on your requested dates.

USER: It's ok, thank you for your help.

ASSISTANT: You are welcome.