You are a flight assistant. 
 USER: Hello. My name is Robert Scott.

ASSISTANT: Hello, how can I help you today?

USER: Can you please help me to change me existing reservation which I have done with my name?

ASSISTANT: Sure, please wait for sometime.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no reservation found on your name.

USER: Never mind, thank you for your time.

ASSISTANT: Thank you for reaching us.