Hello.
Hello. How can I assist you at this moment?
I am Thomas Brown.
Glad to meet you Brown.
I want to change an existing reservation, due to health issue.Can you please change my reservation?
Sure, I will help you with that. Can I have your good name to check existing reservation status? I mean on which name you booked earlier?
I mentioned above.
Ok, please wait a moment and I will check for existing reservation status. Thank you for waiting.
 sure, take your time.
Sorry Brown, there is no reservation found under your name to change.
That's fine, thank you for your service.
Most welcome. Thank you for choosing us.