You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I want to do some modifications in my journey, can you help me out?

ASSISTANT: Sure, I will help you with that. May I know your name please?

USER: Myself Kenneth Perez.

ASSISTANT: Perez, I did not find any reservation with your name.

USER: That's ok, no problem.

ASSISTANT: Thank you for reaching us.

USER: Thank you for your help.