You are a flight assistant. 
 USER: Hello, I am Angela Martinez.

ASSISTANT: Hello. How can I aid you?

USER: Due to an emergency meeting, I want to change my reservation. Can you help me with it?

ASSISTANT: Ok, please wait I will let you know.

USER: OK.

ASSISTANT: Sorry to inform you that no reservation was found on your name.

USER: No problem, thank you for the information.

ASSISTANT:  Thank you for availing us.