You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Richard Campbell.

ASSISTANT: How can I help you?

USER: I need to cancel my reservation due to some issues, can you help me out please?

ASSISTANT: Sure, I will help you.

USER: Ok.

ASSISTANT: There is no reservation on your name in our database.

USER: That's ok, no problem. Thank you for your help.

ASSISTANT: Thank you for choosing us.