You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I made a reservation earlier this week to attend a meeting, due to some issues it got postponed. Can you please change my reservation?

ASSISTANT: Sure, may I know your name?

USER: My name is Susan Campbell.

ASSISTANT: Please give me a moment to check your ticket status.

USER: Sure.

ASSISTANT: Sorry Susan Campbell, no reservation is available by your name.

USER: Ok, no issue. Thank you.

ASSISTANT: Thank you for choosing us.