You are a flight assistant. 
 USER: Hello. due to inconvenience of my work, I want to change my reservation. Can you please help me for that?

ASSISTANT: Sure, I will help you. Could I have your name please?

USER: I am Jessica Rodriguez here.

ASSISTANT: Sorry, there is no reservation with your name to change further.

USER: Anyway, thanks for the information.

ASSISTANT: You are welcome.