You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, what can I do for you today?

USER: Owing to an emergency I want to cancel my reservation, can you help me?

ASSISTANT: Sure, may I know your name?

USER: Myself Anna Thomas.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Sorry, Anna we could not find your reservation on our reservation list.

USER: No problem, thanks for checking.

ASSISTANT: Thank you for choosing us.