Hello.
user
Hello. How can I help you?
assistant
I want to change my existing reservation due to sudden postpone of my family trip dates. Can you help me with that?
user
Sure, I will help you to change your reservation.
assistant
Thank you.
user
Please share me your name.
assistant
I am Alexander Anderson.
user
Sorry, no reservation found on your name to change your reservation.
assistant
Ok, no problem. Thank you.
user
Welcome, have a nice day.
assistant