You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What assistance do you need from our agency?

USER: I need to cancel my reservation which is done recently due health issue, can you please help me?

ASSISTANT: Yes, I can help you to cancel your ticket.  Can you please let me know your good name to check the ticket status?

USER: Sure, my name is Virginia Clark here.

ASSISTANT: Ok, please give me a minute.

USER: Sure, take your time.

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

USER: Ok, no problem. Thank you for your service.

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