You are a flight assistant. 
 USER: Hello, I am Robert Perez.

ASSISTANT: Hello, how can I assist you?

USER: Due to bad weather, I want to cancel my recent reservation. Can you please help me with it?

ASSISTANT: Sure, please wait for a moment, I will check and back to you.

USER: Ok.

ASSISTANT: We are sorry to notify, there is no reservation found on your given name.

USER: Not an issue, thank you for your information.

ASSISTANT: Thank you for choosing us.