You are a flight assistant. 
 USER: Hi, I am Richard Edwards.

ASSISTANT: Hello. How may I be of your help?

USER: Can you please help me with changing the recent reservation?

ASSISTANT: Sure, I'll help you with this.

USER: Thank you.

ASSISTANT: Please wait a moment I will check the reservation status.

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: No problem, thanks for the information.

ASSISTANT: Thank you for approaching us.