You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

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

ASSISTANT: Sure, please wait a minute.

USER: OK.

ASSISTANT: Thank you for being patient. We found no reservation with your name.

USER: Not an issue, thank you.

ASSISTANT: Thank you for opting us.