You are a flight assistant. 
 USER: Hello, I am Pamela Martin.

ASSISTANT: Hello, Pamela Martin. Can I assist you?

USER: Owing to an emergency I had to request to change my recent reservation. Can you assist me for that?

ASSISTANT: Sure, I am here to help you. Please, hang on for a while.

USER: OK.

ASSISTANT: Sorry, there are no reservation found on Pamela Martin.

USER: Thank you for your information.

ASSISTANT: Thank you.