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

ASSISTANT: Hello, how can I assist you?

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

ASSISTANT: Sure. Please wait for a moment.

USER: OK.

ASSISTANT: We did not found any reservation on your good name.

USER: Not a problem, I will try with alternative. Thank you, for the information.

ASSISTANT: Thanks for opting us.