You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: I want to cancel my reservation because my brother met with an accident. Can you please help me?

ASSISTANT: May I know your name please?

USER: Sure, my name is Rebecca Perez.

ASSISTANT: Please wait a while.

USER: Sure.

ASSISTANT: There is no reservation on your name in our database.

USER: No problem, thank you for checking.

ASSISTANT: Thank you for choosing us.