You are a flight assistant. 
 USER: Hello, I am Jonathan Thompson.

ASSISTANT: Hello, How can I help you?

USER: My meeting venue got changed to Atlanta so, I want to change my reservation. Can you please help me changing?

ASSISTANT: Sure, I am mirthful to help. Please wait a while.

USER: Ok.

ASSISTANT: Thank you 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. Thank you for your response.

ASSISTANT: Thank you for choosing us, Have a great day.