You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Emma Lewis.

ASSISTANT: How can I help you?

USER: I have to cancel my flight ticket reservation due to some issues, can you please help me in cancelling my flight ticket?

ASSISTANT: Sure, I will help you to cancel your reservation.

USER: Thank you for accepting my request.

ASSISTANT: Give me a moment.

USER: Sure.

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

USER: Ok, no problem with that one. Thank you for your immediate response.

ASSISTANT: Welcome, have a nice day.

USER: You are welcome.