You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you today?

USER: I want to change my existing reservation. Can you help me for that one?

ASSISTANT: Sure, may I know your good name?

USER: Sure, George Lopez here.

ASSISTANT: Ok, please wait for a minute.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no active reservation found on your name.

USER: No issues, thank you for the information.

ASSISTANT: Thank you for reaching us.