You are a flight assistant. 
 USER: Hi, I am Nancy Turner.

ASSISTANT: Hello, How can I assist you now?

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

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: Please hold on for a while.

USER: Ok, i will wait for your response.

ASSISTANT: Thanks for your time. We did not find any reservation on your name, to change it.

USER: Oh! May be booking is not done properly. Thank you.

ASSISTANT: Thanks for your interest on us.