You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you today?

USER: I want to change my recent reservation, Can you please help me in that?

ASSISTANT: Sure, I'll try to help you in changing an existing reservation.

USER: Thank you.

ASSISTANT: Please share your name to check the reservation list.

USER: My name is Sharon Moore.

ASSISTANT: Ok, give me sometime.

USER: Sure.

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

USER: Ok, that's not a problem. Thank you.

ASSISTANT: Thank you for approaching us.