You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I want to change my reservation as my plan to meet my friend is postponed. Can you help me with that?

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: can you please share your name?

USER: My name is Anthony Perez.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Thanks for being patient, there is no active reservation found on your name.

USER: Ok, Thank you for the information.

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