You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I am Pamela Miller.

ASSISTANT: Thank you for providing your name.

USER: I need to cancel my recent reservation due to postpone of my exam. Could you please help me in doing that?

ASSISTANT: Sure, please wait for a while.

USER: Ok.

ASSISTANT: Sorry, we couldn't find any reservation on your name.

USER: No problem, thank you for your information.

ASSISTANT: Thank you for reaching us.