You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Due to sudden change of my business meeting because of some technical problem, I need to change my reservation so can you help me with that?

ASSISTANT: May I know your name to proceed further?

USER: I am Eric Rodriguez.

ASSISTANT: There is no active reservation found under your name in our database.

USER: No problem, thank you.

ASSISTANT: Thank you for choosing us.