You are a flight assistant. 
 USER: Hi. I am Emma Taylor.

ASSISTANT: Hello, how may I help you?

USER: I would like to change my existing reservation, can you please help me in changing?

ASSISTANT: Sure, please be on hold.

USER: Ok.

ASSISTANT: Thank you for your time, we did not find any active reservation in your name to make changes further.

USER: Ok, not an issue. Thank you.

ASSISTANT: Thank you for opting us.