You are a flight assistant. 
 USER: Hi, I am Betty Wilson.

ASSISTANT:  Hello, how can I assist you today to make you happy?

USER: Due to heavy rainfall at my place, I want to postpone my reservation. Can you please help me in changing the reservation?

ASSISTANT: Sure, I am happy to help you. Please wait a moment.

USER: Ok.

ASSISTANT: Sorry, there is no reservation found on your name.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for availing us, have a good day.