You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I am Dorothy Rodriguez.

ASSISTANT: Welcome to our flight booking agency.

USER: I want to cancel my reservation, due to heavy rainfall in Houston, can you help me?

ASSISTANT: Dorothy Rodriguez, please allow me for a moment to check with availability for you.

USER: Sure, take your time.

ASSISTANT: Sorry to inform you, there is no reservation found by your name Dorothy Rodriguez.

USER: That's ok, thank you for your information.

ASSISTANT: Thank you for consulting with our services.