You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

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

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: Please be hold on for a moment.

USER: Sure, take your time.

ASSISTANT: Sorry Perez, there is no reservation found under your name to cancel.

USER: Oh! I think my cousin had cancelled my reservation. Anyways, thank you for the information.

ASSISTANT: Most welcome. Thank you for choosing us, have a great day.

USER: Welcome.