You are a flight assistant. 
 USER: Hello, I am Deborah Campbell.

ASSISTANT: Hello, how can I assist you?

USER: I need to change my existing reservation due to the heavy cyclone. Please, help.

ASSISTANT: Ok, please wait for a minute.

USER: Sure.

ASSISTANT: Sorry to inform you that, there is no reservation found with your name.

USER: Ok, no issue. Thanks for the information.

ASSISTANT: Thanks for choosing us.