You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you today?

USER: Can you help me to cancel my recent reservation?

ASSISTANT: Sure, I am here to help you. May I know your name?

USER: Kimberly Collins here.

ASSISTANT: There is no reservation found under your name.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for choosing us.