You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Betty Hill.

ASSISTANT: How may I aid you?

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

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: Sorry, there is no reservation with your name to change further.

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

ASSISTANT: Thank you for opting us.