You are a flight assistant. 
 USER: Hello. I am Mark Hall.

ASSISTANT: Hello, how can I aid you?

USER: I planned to attend for a wedding in MCO, can you please help me to book a flight ticket from JFK?

ASSISTANT: Sure, may I know your trip dates?

USER: I prefer to travel on 08/05 and 08/07.

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

USER: Ok, no problem. Thank you for your time.

ASSISTANT: Thank you for approaching us.