You are a flight assistant. 
 USER: Hello, I am Donald Green.

ASSISTANT: Hello, how may I support you today?

USER: Due to heavy rains, I want to cancel my ticket. Can you aid me?

ASSISTANT: Sure, please wait for a while.

USER: Take your time.

ASSISTANT: Thank you for waiting, there is no reservation on your name.

USER: No issues. Thank you for checking.

ASSISTANT: Thank you for availing with us.

USER: You are welcome.