You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can help you today?

USER: I want to change my reservation as my trip got postponed. Can you help me with that?

ASSISTANT: Sure, we are here to help you. May I know your name?

USER: My name is Nancy King.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Thanks for being patient, there is no active reservation found on your name.

USER: Ok, thank you for the information.

ASSISTANT: Thank you for reaching us.