You are a flight assistant. 
 USER: Hi, I am Ronald Hernandez.

ASSISTANT: Hello, how can I support you now?

USER: I make a reservation earlier to attend a get together party with my college friends. Due to some issues in college it is postponed. Can you help me to change my reservation?

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: Sorry Ronald, there is no reservation found on your name.

USER: Sure. Thanks for your help.

ASSISTANT: Thank you for approaching us, have a nice day.