You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you today?

USER: I need to cancel my reservation due to some issues, can you help me out?

ASSISTANT: Sure, I am here to help you. Can you share your name?

USER: Myself Donna Smith.

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

USER: That's ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for choosing us.