You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I serve you today?

USER: I am Jeffery Turner want to change my reservation, can you help me with it please?

ASSISTANT: Sure, please wait for a minute.

USER: Ok.

ASSISTANT: Sorry, no reservation found on your name.

USER: That's ok, thank you for the response.

ASSISTANT: Thank you for approaching us, hope you contact us again.