You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Due to bad weather condition in my city, I am planning to cancel my reservation. Can you help me?

ASSISTANT: Sure, can I know your name please?

USER: Myself Dorothy Brown.

ASSISTANT: Sorry Dorothy, there is  no reservation found with your name in our records.

USER: It's ok. Anyway, thank you for your help.

ASSISTANT: Thank you for approaching us.