You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you today?

USER: My name is Jonathan Wilson and I just want to cancel my recent reservation, can you please help me?

ASSISTANT: Sure Wilson, please wait for a minute.

USER: OK.

ASSISTANT: I am very sorry Wilson, I cannot find any reservation with your details.

USER: OK, no problem.

ASSISTANT: Thank you so much for contacting us, have a nice day!.

USER: Thank you.