You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: Due to heavy rain,  I want to change my reservation. Can you help me?

ASSISTANT: Sure, can I have your name please?

USER: Kathleen Moore here.

ASSISTANT: There is no reservation found with your name.

USER: No problem, Thank you.

ASSISTANT: Have a good day.