You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you for today?

USER: Due to some client meeting this weekend, I am planning to change my reservation. Can you please help me for this?

ASSISTANT: I am here to help you about that. Can you please provide your name for checking reservation status?

USER: Myself Betty Lopez.

ASSISTANT: Please wait for sometime.

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

ASSISTANT: Sorry to say this Betty Lopez, there is no active reservation with your name in our booking list.

USER: Not a big deal, anyhow thank you very much for your kind information.

ASSISTANT: You are welcome, thank you for reaching us.