You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Richard Thompson here.

ASSISTANT: How can I help you today?

USER: I was made a wrong reservation earlier in this week. So I want to change my reservation. Can you please help me for that?

ASSISTANT: Sure, I can help you with that.

USER: Ok.

ASSISTANT: There is no previous reservation found on your name.

USER: Thank you for the information.

ASSISTANT: Thank you for contacting us, have a good day.