You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I'm Margaret Lopez.

ASSISTANT: Nice meeting you Lopez.

USER: I want to travel from NY-JFK to MI-DTW, can you please help me to book a ticket?

ASSISTANT: Sure, let me know your travelling dates please.

USER: Sure, my planning is from 11/29 to 12/01.

ASSISTANT: Sorry Lopez, there is no flight available on your provided dates.

USER: No problem.

ASSISTANT: Thank you for approaching us.

USER: Most welcome.