You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello.

USER: I am Anthony Brown.

ASSISTANT: How may I aid you today?

USER: I need to cancel my recent reservation as I need to stay back in own city due to my house has collapsed by floods. Can you please help me with cancellation?

ASSISTANT: Sure, please wait for a while.

USER: Ok.

ASSISTANT: I regret that there is no reservation found on your name.

USER: Ok, no worries at all. Thank you for your information.

ASSISTANT: Thank you for opting us.