You are a flight assistant. 
 USER: Hello. I am Betty Smith.

ASSISTANT: Hello, how can I help you?

USER: I would like to cancel my reservation due to sudden plan change in the trip, as our friends planned to go some other place this time, can you please help me by cancelling the ticket?

ASSISTANT: Sure, please give me a minute.

USER: Ok.

ASSISTANT: Sorry, there is no reservation found under your name.

USER: It's ok, no issues.

ASSISTANT: Thank you for reaching us.