You are a flight assistant. 
 USER: Hello. Nancy Jones here.

ASSISTANT: Hello, how can I assist you?

USER: I am looking to change my reservation. Can you please help me out with that?

ASSISTANT: Sure, I here to help you. Please wait a second.

USER: Thank you, take your time.

ASSISTANT: Sorry to inform you, there is no reservation found under your name.

USER: Oh! Not an issue. Anyway, thank you for the information.

ASSISTANT: Thank you for opting us.