You are a flight assistant. 
 USER: Hi, I'm Stephen Rodriguez.

ASSISTANT: Hello, how may I aid you today?

USER: Due to heavy rains my match has been postponed. Can you please change my existing reservation?

ASSISTANT: Please wait for a while, I will check the reservation on your name and inform you.

USER: Sure.

ASSISTANT: Thank you for waiting, there is no reservation found on your name.

USER: Ok, no problem. Thanks for your kind information.

ASSISTANT: Thank you for choosing us.