You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Daniel King.

ASSISTANT: How can I serve you today?

USER: I want to change my reservation as my orientation day program got postponed. Can you help me?

ASSISTANT: Sure, I am here to help. Please give me a moment.

USER: Sure.

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

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

ASSISTANT: Thank you for reaching us.