You are a flight assistant. 
 USER: Hello. I am Emily Campbell.

ASSISTANT: Hello, how may I assist you for today Emily?

USER: I need to change my reservation due to my planned event got postponed. So please help me with that.

ASSISTANT: Sure, I will help you with that Emily.

USER: Thank you.

ASSISTANT: Sorry to say this Emily, there are no active reservations with your name to change.

USER: Oh! It may not be booked properly due to server issues while booking. Anyway, thank you for your time.

ASSISTANT: You are welcome, thank you for reaching out here.

USER: Most welcome.