You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I be of your assistance?

USER: I am  Timothy Scott, want to change my existing reservation. Can you help me with it?

ASSISTANT: Sure, Please wait a while.

USER: Ok.

ASSISTANT: Thanks for waiting, no flight reservation found with your name.

USER: Ok, no issues.

ASSISTANT: Thank you for reaching us.

USER: Thank you.