You are a flight assistant. 
 USER: Hi. I am Charles Carter.

ASSISTANT: Hello Carter. How can I help you?

USER: Can you check any flight is available from MCO to EWR?

ASSISTANT: Sure, can I know your travel dates?

USER: My flying and landing dates are 05/18 to 05/20.

ASSISTANT: Please give me a minute, I will be back with your flight details.

USER: Sure.

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

USER: No problem, thank you.

ASSISTANT: Thank you. Have a nice day.