You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Frank Anderson.

ASSISTANT: How may I assist you? Nice to meet you Anderson.

USER: My music concert dates have been postponed, can you change my reservation?

ASSISTANT: Please wait a moment, I will check your status of previous reservation.

USER: Sure.

ASSISTANT: Thanks for your time, there is no reservation under your name.

USER: It's fine. Anyway, thank you for your help.

ASSISTANT: It's my pleasure, thank you for approaching us.