You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I'm Sandra Robinson.

ASSISTANT: Nice meeting you Sandra.

USER: I have postponed all my plans due to heavy rains in my destination place, can you please change my recent reservation?

ASSISTANT: Ok, I can help you. Please wait a moment to check it. Sorry Sandra, there is no ticket found on your requested name.

USER: Ok, fine.

ASSISTANT: Thank you for approaching us Sandra.

USER: Thank you for your response.