You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Due to sudden health issue, I want to cancel my reservation. Can you please help me out with that?

ASSISTANT: Sure, I am here to help you. Please wait, let me check your reservation status. May I know your name?

USER: Thank you for accepting my request, I had reserved it on the name of Jacob Taylor.

ASSISTANT: Sorry, I did not find any reservation under your name in our database.

USER: Oh! I think it was cancelled by my cousin. Thank you for checking.

ASSISTANT: You are welcome and thank you for choosing us.

USER: Welcome.