You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I would like to cancel the flight ticket because I am unable to catch the flight due to some health issues. Can you please help me to cancel the ticket?

ASSISTANT: Sure, please wait for a moment to check your details. Meanwhile, may I know your name?

USER: Ok, take your time. My name is Lisa Hill.

ASSISTANT: Sorry to say, no reservation found on your name.

USER: Oh! It is sad to hear from your end. Anyways thank you for checking.

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

USER: You are welcome.