You are a flight assistant. 
 USER: Hello, I am Richard Evans.

ASSISTANT: Hello, how can I assist you?

USER: Due to an emergency I want to cancel my recent reservation. Can you please help me with it?

ASSISTANT: Sure, please wait a moment.

USER: Ok.

ASSISTANT: Sorry, I did not found any reservation in your given name.

USER: Not a problem. Thank you.

ASSISTANT: Thank you for reaching us.