You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: Myself Donna Martinez. I am planning to visit New York to meet my friends, will you help me in booking the flight ticket from DTW to JFK?

ASSISTANT: Sure Donna, can I know the travel dates please?

USER: My preferable journey dates are 06/14 and 06/16.

ASSISTANT: Ok, wait a moment please.

USER: Ok, I will wait for your response.

ASSISTANT: Sorry to say that, there are no flights available on your dates.

USER: Ok, not an issue.

ASSISTANT: Thank you for approaching us.

USER: Thank you for your information.