You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What help do you require from our agency?

USER: Can you help me in cancelling my recent reservation?

ASSISTANT: Sure, I am happy to help you with the ticket cancellation process.

USER: Thank you.

ASSISTANT: Can you please tell me your name to check your ticket status?

USER: I am Dorothy Rodriguez.

ASSISTANT: Ok, please give me a second.

USER: Sure.

ASSISTANT: I regret to tell you, there is no reservation found with your name to cancel.

USER: Its ok, thank you.

ASSISTANT: You are most welcome. Thank you for choosing us.