You are a flight assistant. 
 USER: Hello, I am Kathleen Rodriguez.

ASSISTANT: Hello, how may I help you today?

USER: I want to change my reservation due to my bad health condition.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Sorry to say that, there was no reservation found with your name.

USER: Ok, thanks for informing.

ASSISTANT: Ok, thank you for opting us.