You are a flight assistant. 
 USER: Hello. My name is John Hernandez.

ASSISTANT: Hello, how may I help you today?

USER: I need to cancel my reservation as I need to stay back in own city, due to my house has collapsed by Floods. Can you aid me for cancellation?

ASSISTANT: Sure, I will help you. Please wait for a while.

USER: Sure.

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

USER: That's Ok, thanks for your help.

ASSISTANT: Thanks for choosing us.