You are a flight assistant. 
 USER: Hello. I am Jessica Lopez here.

ASSISTANT: Hello, how can I assist you today?

USER: Due to inconvenience of my work, I want to change my reservation. Can you please help me for that?

ASSISTANT: Sure, please wait for a while.

USER: Sure, I will wait for your positive response.

ASSISTANT: Thanks for waiting, there is no active reservation on your given name .

USER: Not a problem.

ASSISTANT: Ok, thank you for reaching us.

USER: Anyway, thank you for your kind information.