You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I amend you?

USER: Due to emergency health issue, I want to cancel my recent reservation. Can you please help me?

ASSISTANT: Sure, may I know your name?

USER: My name is Jacob Williams.

ASSISTANT: Ok, please hold on.

USER: Sure.

ASSISTANT: Sorry, there is no reservation found on your name.

USER: Ok, no problem. Thanks for your response.

ASSISTANT: Thank you for availing us.