You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I made an earlier reservation to attend a shareholders meeting, due to some technical issues it got postponed. Can you please help me to change my reservation?

ASSISTANT: Sure, I will help you to change your reservation.

USER: Thank you.

ASSISTANT: Please mention your name.

USER: My name is Pamela Jones.

ASSISTANT: Sorry, no reservation found on your name to change your reservation.

USER: Ok, no problem. Anyway thank you for the information.

ASSISTANT: Welcome, have a nice day.