You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Justin Gonzalez here. I will be cancelling my reservation due to earthquake in Austin, can you help me?

ASSISTANT: Sure, I will help you with our cancellation.

USER: Thank you for your positive response.

ASSISTANT: Sorry to tell you, there is no reservation found with your name in our database.

USER: Oh! That's very sad to know. Anyways, than you for checking.

ASSISTANT: You are welcome, thank you for choosing us.

USER: You are most welcome.