You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Larry Harris here.

ASSISTANT: Ok Larry, what help you need from our travel agency?

USER: I have some urgent work in my office. Can you change my reservation?

ASSISTANT: Sure, I will help you in changing your ticket.

USER: Sure.

ASSISTANT: Sorry to inform you, I have checked your reservation in our records with name Larry Harris but I didn't found any ticket booked.

USER: It's ok.

ASSISTANT: Thank you for consulting us.

USER: Anyway, thank you for your help.