You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: William Roberts here.

ASSISTANT: How can I assist you at this moment?

USER: Can you please help me in cancelling my recent reservation? As my visiting location is completely destroyed by floods.

ASSISTANT: Sure, I will help you with this. Please be on hold for a moment.

USER: Ok.

ASSISTANT: There is no reservation found under your name to do cancellation.

USER: That's ok, thank you for giving the information.

ASSISTANT: Thank you for choosing us.