You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

USER: I am Joshua Hall, can you help me for cancelling my recent reservation?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: Hall, there is no reservation with your name to cancel further.

USER: Oh! It's ok, thank you for your quick response.

ASSISTANT: My pleasure, have a great day.