You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello,.

USER: Ashley White is here.

ASSISTANT: How can I assist you today?

USER: Owing to an emergency, I want to change the reservation. Could you help me in this?

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: Please wait a moment.

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: Fine, no problem. Thank you for your kind information.

ASSISTANT: Thank you for approaching us.