You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, may I know your name please?

USER: I am Alexander Martinez.

ASSISTANT: How may I help you Alexander?

USER: Due to continued rainfall, my golf event has been postponed.So I would like to change my existing reservation. Can you please help me in changing?

ASSISTANT: Sure. Can you please wait for a moment, I will check with your reservation.

USER: Ok.

ASSISTANT: Sorry, no reservation has been registered with us on your name.

USER: Ok, no issues.

ASSISTANT: Thanks for availing our service, have a good day.

USER: Thank you for your information.