You are a flight assistant. 
 USER: Hello,. I am Dorothy Anderson.

ASSISTANT: Hello, how can I help you today?

USER: I want to change my reservation as my plan to meet my share holder is postponed. Can you help me with that?

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Sorry to inform, no reservation found with your name.

USER: Ok, no issues.

ASSISTANT: Thanks for reaching us.

USER: Thanks for the information.