Hello.
user
Hello, how can I help you?
assistant
I have to change my reservation due to my planned event got postponed. So please help me with that.
user
Sure, can you please provide me your name to check the reservation?
assistant
Thank you. Please check the reservation with my name Margaret Young.
user
Sorry, there is no reservation with your given name.
assistant
Oh! It may  not be booked properly. Anyway, thank you for your time.
user
Thank you for reaching us.
assistant
Most welcome.
user