You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I guide you today?

USER: I need to amend my reservation due to some issues in my locality, can you help me out?

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

USER: Myself John Davis.

ASSISTANT: I am sorry to say that there is no reservation found under your name.

USER: That's ok, not an issue. Thank you.

ASSISTANT: Thank you for reaching us.