Hello, Anna King here.
user
Hello. How can I help you with today?
assistant
Suddenly there is a change in my trip, so I want to change my existing reservation. Can you please help me change the reservation?
user
Sure, I can help you with that. Please allow me a moment to check the details for you.
assistant
Ok.
user
Anna, I have checked and see that there is no reservation found under your name.
assistant
It's fine, thanks for your help.
user
You are welcome. Thank you for contacting us.
assistant