You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Angela Baker here. I need to change my existing reservation, due to some issues. Can you help me in doing that?

ASSISTANT: Ok, please hold on a moment I will revert you back with the current status of your reservation.

USER: Ok.

ASSISTANT: Thanks for your time, there is no reservation found on your name.

USER: Ok, no issues.

ASSISTANT: Thanks for contacting us.

USER: Thank you for the information.