You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Can you please help me to modify my previous reservation to other places?

ASSISTANT: Sure, may I know your name please?

USER: Sure, you can check the reservation on the name of Margaret King.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry, there was no reservation found with your given name.

USER: No issues, thank you.

ASSISTANT: Thank you for opting us.