You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: I am Michael Parker. I have an earlier reservation to sign a new contract for new project, due to some problems it got postponed. Can you help me in changing?

ASSISTANT: Sure, we are here to help you. Wait for some time I will check the reservation on your name and get back to you.

USER: Sure.

ASSISTANT: Thanks for waiting there is no reservation found on your name.

USER: That's fine, thanks for your assistance.

ASSISTANT: Thanks for approaching us.