You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Charles Gonzalez.

ASSISTANT: How else can I help you today? Glad to meet you Charles.

USER: I had planned to go on a vacation to New York, it was cancelled due to some personal problems.

ASSISTANT: Ok fine.

USER: I am looking for cancelling of my recent reservation.Can you help me out?

ASSISTANT: Sure, I will help you to cancel that reservation, please hold on for a minute.

USER: Sure, take your time.

ASSISTANT: Thanks for your patience. We do not have any reservation with this name in our database.

USER: That's ok. Anyways, thank you for your help.

ASSISTANT: It's my pleasure, have a nice day.