You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Katherine Gonzalez.

ASSISTANT: How can I help you at this moment?

USER: I need to cancel my reservation due to some crisis in my location, can you help me out?

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: Sorry to say this, no reservation found on your name in our database.

USER: That's ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for opting us.