Hello.
user
Hello, how can I help you?
assistant
I would like to change my dates of existing reservation as my holiday dates are changed by my boss, can you help me?
user
Sure, may I know your name please?
assistant
Sure, myself George Johnson.
user
Sorry, there is no reservation with your name to change further.
assistant
Oh! That's very sad news to hear from you. Anyways, thank you for checking.
user
Thank you for opting us.
assistant
You are most welcome.
user