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