You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Lisa Garcia here.

ASSISTANT: How can I help you now?

USER: Due to sudden health issue, I am not able to travel in a flight on those dates, can you please help me out with cancelling of my reservation?

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: Sorry Lisa, there is no reservation found on your name.

USER: Oh! I think the ticket was not booked properly while I am booking.

ASSISTANT: Thank you for approaching us, have a nice day.

USER: Anyways, thank you for the information.

ASSISTANT: You are welcome.