You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how best can I aid you for the day?

USER: Due to some office meeting, I am planning to change my reservation. Can you please help me for this?

ASSISTANT: Sure, please share you good name?

USER: Myself Samantha Turner.

ASSISTANT: Sure, please hold a moment.

USER: Ok, I will wait for your response.

ASSISTANT: Thank you for waiting, there is no active reservation found with name Samantha Turner.

USER: Not a big deal, anyhow thank you very much for your kind information.

ASSISTANT: Thank you.