You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I want to cancel my reservation as my fare well got cancelled. Can you help me?

ASSISTANT: Sure, I am glad to help you with that one. Can you please mention your previous booking name?

USER: I am Emma Lewis.

ASSISTANT: Please give me a moment.

USER: Sure.

ASSISTANT: Sorry, there is no reservation found for the user name in our date base to cancel your booking.

USER: Ok fine, thanks for your response.

ASSISTANT: Thank you are welcome.