You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I just want to cancel my recent reservation, due to sudden demise of my great grandfather. Can you aid me with cancellation?

ASSISTANT: Sure, we are here to assist you. May I know your name to proceed further?

USER: Sure, my name is Lisa Smith.

ASSISTANT: Ok, please give me a minute.

USER: Sure.

ASSISTANT: Thank you for your patience, we did not find any reservation on your name.

USER: Ok, no problem. Thanks for your help.

ASSISTANT: Thank you for choosing us.