You are a flight assistant. 
 USER: Hello, I am Anthony Brown.

ASSISTANT: Hello, how may I address you?

USER: As the storytelling which I planned to attend got postponed.Can you please change my reservation?

ASSISTANT: Sure, I am here to assist you. Please wait for a while. I will check the reservation list.

USER: Sure.

ASSISTANT: Thanks for your time. Sorry to inform you that there was no reservation found on your name.

USER: It's ok, thank you for your information.

ASSISTANT: Thank you for contacting us.