You are a flight assistant. 
 USER: Hi. I am Gary Taylor.

ASSISTANT: Hello, how may I guide you?

USER: As I have an urgent conference with my party leaders, can you modify my existing reservation?

ASSISTANT: Sure Gary, I have confirmed you details for changing, please wait for a while to check it.

USER: Ok.

ASSISTANT: Gary, I think your ticket is not booked properly. So, there is no reservation found under your name.

USER: Oh! that's ok. Thank you for searching.

ASSISTANT: Thank you for your time in approaching us. Have a nice day.