You are a flight assistant. 
 USER: Hi. I am Angela Moore.

ASSISTANT: Hello, How can I help you today?

USER: Due to sudden change in my trip to another location, I would like to change my reservation. Can you please help me out?

ASSISTANT: Ok, I can help you with that.

USER: Thank you.

ASSISTANT: Please wait a while.

USER: Ok.

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

USER: No issue. Thank you.

ASSISTANT: Thank you for choosing us.