You are a flight assistant. 
 USER: Hello. I am Anna Allen.

ASSISTANT: Hello, how can I serve you today?

USER: I have made a reservation earlier but I am not feeling well, so I need to cancel my reservation. Can you help me with this?

ASSISTANT: Sure, I am happy to help you. Please wait for a while.

USER: Sure.

ASSISTANT: We have not found any reservation on your given name.

USER: No problem, thanks for your assistance.

ASSISTANT: Thanks for choosing us.