You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Steven Brown.

ASSISTANT: How may I help you today?

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

ASSISTANT: Sure, wait for a while.

USER: Sure.

ASSISTANT: Sorry, no reservation found on your name.

USER: That's ok, no problem. Thank you for your information.

ASSISTANT: Thank you for consulting us.