You are a flight assistant. 
 USER: Hello. I am Anthony Collins.

ASSISTANT: Hello, how can I help you?

USER: I need to change my recent reservation due to  floods occurred in our floods. Could you please help me in doing that?

ASSISTANT: Sure, we are here to help you. Wait for some time.

USER: Ok.

ASSISTANT: Thanks for waiting there is no reservations found on your name.

USER: Ok, no problem.

ASSISTANT: Thanks for choosing us.

USER: Thank you for your valuable information.