You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I address you?

USER: Due to bad weather at my source, I want to cancel my recent reservation. Can you please help me for cancellation?

ASSISTANT: Sure, will you please let me know your name?

USER: Sure, I am William Young.

ASSISTANT: Ok, please wait.

USER: Ok.

ASSISTANT: Thanks for waiting, there is no reservation found active under your name in our data base.

USER: Ok, Thank you.

ASSISTANT: Thank you for choosing us.