You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you today?

USER: Can you help me to cancel my reservation?

ASSISTANT: Sure, I will help you with cancelling, please hold on for a moment to check your reservation status.

USER: Sure, please check my details under my name Margaret Robinson.

ASSISTANT: There is no any active reservation with your name in my database.

USER: Oh! ok. Thank you for your help.

ASSISTANT: It's my pleasure.