You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Myself Emily Gonzalez. I want to change my existing reservation due to some changes in my plans. Can you help me in that?

ASSISTANT: Sure, we are here to help you. Please wait for a while.

USER: Ok.

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

USER: Ok, not an issue. Thank you for giving information.

ASSISTANT: Thank you for choosing us.