You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Betty Walker, have to cancel my ticket because, I need to attend an emergency.

ASSISTANT: Sure, please wait a moment.

USER: Ok.

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

USER: Ok. Thanks for your prompt response.

ASSISTANT: Thank you for availing us.