Hello.
user
Hello, do you need any help from us?
assistant
Myself Amy Collins. Due to some business meeting, I am going to change my reservation. Can you please help me with that?
user
I understand your request and will be happy to help you.
assistant
Sure, I will wait for your response.
user
Sorry, there is no reservation with your name in our portal to change further.
assistant
Not an big problem, anyhow thank you very much for your service.
user
You are welcome, have a great day.
assistant