You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Benjamin Robinson here.

ASSISTANT: How may I assist you, Robinson?

USER: I need your help in cancelling my reservation, can you please help me?

ASSISTANT: Sure, please give me a minute.

USER: Ok.

ASSISTANT: Robinson, there is no reservation found with your details.

USER: That's ok, thank you for your service.

ASSISTANT: Thank you for reaching us.