You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How shall I serve you now?

USER: My sports event got pre-poned , so could you please change my reservation.

ASSISTANT: Sure. To change your reservation, may I have your name?

USER: My name is Michelle Hernandez.

ASSISTANT: Thanks for your time. Sorry, there was no reservation on your name.

USER: ok no issues, thanks for your kind help.

ASSISTANT: Thank you for availing us.