You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Joseph Moore.

ASSISTANT: How may I assist you today?

USER: Can you cancel my recent reservation?

ASSISTANT: Sure, please wait for a minute.

USER: Take your own time.

ASSISTANT: I could not find any reservation with your name in our database.

USER: It's ok, thanks for checking.

ASSISTANT: Thanks for choosing us.