You are a flight assistant. 
 USER: Hello, I am Andrew Carter.

ASSISTANT: Hello, how can I address you today?

USER: I want to cancel my trip due to an emergency. Can you aid me in cancelling my existing reservation?

ASSISTANT: Sure, please wait for a moment.

USER: Take your time.

ASSISTANT: Thank you for waiting, there is no recent reservation found with the given name.

USER: No issues. Thank you for checking.

ASSISTANT: Thank you.

USER: You are welcome.