You are a flight assistant. 
 USER: Hello, I am Joshua Rodriguez.

ASSISTANT: Hello, how may I help you?

USER: I would like to stay back in my home for few more days, so could you please cancel my ticket?

ASSISTANT: Sure, I will help you. Please wait a moment.

USER: Ok, take your time.

ASSISTANT: Sorry Joshua, there is no reservation found with your name to cancel the ticket.

USER: That's ok, thank you.

ASSISTANT: Thank you for reaching us.