You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: Unfortunately, I would like to cancel my recently done reservation due to heavy floods, can you please help me in this condition?

ASSISTANT: Sure, can I know your name please?

USER: Ok, my name is Barbara Collins here.

ASSISTANT: Ok, wait a moment please.

USER: Sure, take your time.

ASSISTANT: Sorry Collins, there is no reservation found on your name in our database.

USER: Ok, not an issue.

ASSISTANT: Thank you for choosing us.

USER: Thank you for your service.