Hello.
Hello. How may I assist you today?
Would it be possible to change my reservation to new travelling dates?
Sure, I will help you with that. Please wait for a  minute, I will get back to you.
Sure.
May I know your name please?
I am Christopher White.
I am sorry to say that there is no reservation found under your name.
Ok, Thank you for your help.
Thank you for reaching us, have a great day.