You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I am Janet Turner. I want to change my existing reservation. Could you help me with that?

ASSISTANT: Sure, I am here to aid you.

USER: Thank you.

ASSISTANT: Please give me a minute, I will check the reservation on your name and revert to you.

USER: Ok.

ASSISTANT: Thank you for your time, we are sorry to inform you that there was no reservation found on your given name.

USER: That's ok, no problem. Thank you.

ASSISTANT: Thank you for availing us.