Hello.
user
Hello.
assistant
I am Andrew Green.
user
How may I help you?
assistant
I need to change my reservation due to my planned event got postponed. So please help me with that.
user
Please wait a moment.
assistant
Thank you for that. I will wait for your response.
user
Sorry, no reservation found by your name.
assistant
Oh!  It may not be booked properly due to server issues. Anyway, thank you for your time.
user
Thanks.
assistant
Most welcome.
user