Hello.
user
Hello, how can I oblige you today?
assistant
Myself Lisa Miller. I want to change my travel dates in my previous reservation so can you please help me with that?
user
Sure, please wait for a moment.
assistant
Ok, thank you.
user
Thank you for waiting, there is no active reservation found with the given  name.
assistant
Oh! It's ok no problem. Thank you for your information.
user
Thank you.
assistant