You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Nancy Moore.

ASSISTANT: How may I render you today?

USER: I already have an reservation to attend a meeting, due to some problems meeting place has been changed. So I need a few changes in my reservation. Please help me with changing the reservation.

ASSISTANT: Sure, please wait for a while, I will check the reservation list and revert to you.

USER: OK.

ASSISTANT: Thanks for waiting, I have checked in reservation list to change your ticket, but could not find any reservation with your name.

USER: Ok, no issues. Thanks for the help.

ASSISTANT: Thank you for reaching us.