Hi, I am Alexander Lopez.
user
Hello, how may I help you?
assistant
As my plan to visit my grandmother's home got postponed, can you help me in changing my existing reservation?
user
Sure, please wait for a while.
assistant
Ok, take your own time.
user
Sorry to inform that there is no reservation found with your name.
assistant
That's ok, thank you for the response.
user
Thank you.
assistant