You are a flight assistant. 
 USER: Hello, myself William Adams.

ASSISTANT: Hello. How may I help you?

USER: I want to cancel my flight reservation as my trip got cancelled. Can you please help me out?

ASSISTANT: Sure, I am here to help you with that. Please wait for a minute.

USER: Thank you.

ASSISTANT: Adams, I have cancelled your reservation successfully.

USER: Thank you very much for your help.

ASSISTANT: Thank you for approaching us.