You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I would like to change my reservation as my Basket ball match got postponed due to bad weather conditions. Could you please aid me to change my reservation?

ASSISTANT: Sure, we are here to help you.

USER: Ok.

ASSISTANT: Can I have your name to proceed?

USER: Sure, I am Brenda Brown from New York.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Thank you for your time, sorry, no reservation found with provided name.

USER: No problem, thanks for your service.

ASSISTANT: Thank you for availing us.