You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: My name is Joseph White. Owing an emergency, I want to cancel my reservation. Can you help me for that?

ASSISTANT: Ok, please hold on a minute.

USER: Sure, I will wait for your response.

ASSISTANT: Thanks for your patience, there is no reservation found on your name to cancel it.

USER: That's ok, thank you for checking.

ASSISTANT: Thanks for choosing us, have a nice day.

USER: Welcome.