You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I want to cancel my recent reservation. Can you help me out?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: May I know your name?

USER: Helen Gonzalez.

ASSISTANT: Please wait.

USER: Ok.

ASSISTANT: There is no reservation found under your name to cancel.

USER: That's ok. Anyways, thank you.

ASSISTANT: Thank you for choosing us.