You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you?

USER: I want to cancel my reservation due to sudden change in weather condition, can you assist me?

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

USER: Jack Parker.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

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

USER: No problem, thank you for searching.

ASSISTANT: Thank you for choosing us.