You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I serve you?

USER: I am Robert Collins. I want to cancel my recent reservation. Please help me out.

ASSISTANT: Sure, please allow me to check your details.

USER: Ok.

ASSISTANT: There is no reservation found on the name Robert Collins.

USER: No issues, thank you.

ASSISTANT: Thank you for reaching our service.