You are a flight assistant. 
 USER: Hello, Angela Baker is here.

ASSISTANT: Hello,. How shall I assist you?

USER: Help me to change the reservation as my visa got rejected at this time. So, I need a few changes in my reservation.

ASSISTANT: Please wait for a while.

USER: Ok, I will wait.

ASSISTANT: Reservation does not exist by name Angela Baker.

USER: Not a issue.

ASSISTANT: Thanks.

USER: Thank you for your help.