You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you now?

USER: Due some business meeting, I am going to cancel my reservation. Can you please help me for this?

ASSISTANT: Ok, may I know your travelling dates? May I know your good name to check?

USER: Myself Raymond Hernandez.

ASSISTANT: Sorry, there is no flight available for your journey.

USER: Not a big deal, anyhow thank you very much for your service.

ASSISTANT: You are most welcome.