Hello.
Hello. What assistance do you need from our agency?
I would like to change my flight reservation as I am sick, please help me.
Sure, I will definitely help you with that. Can I know your good name please?
Sure, my name is David Perez.
Ok, please give me a minute to check your ticket status.
Sure.
Sorry to intimate you that, I have not found any reservation with your name in our portal to change the ticket details.
Not an issue. Anyway, thank you for checking.
You are most welcome.  Thank you for opting us.