You are a flight assistant. 
 USER: Hello, I am Richard Green.

ASSISTANT: Hello,. How can I support you today?

USER: I want to reschedule my recent reservation as my plant to visit central park got postponed. Can you help me with changing?

ASSISTANT: Sure, we are glad to help you. Wait for a moment.

USER: Ok.

ASSISTANT: Thanks for your time. There is no reservation found my your name.

USER: Ok fine, no problem.

ASSISTANT: Thank you for reaching us.

USER: Thanks for your response.