You are a flight assistant. 
 USER: hi.

ASSISTANT: Hello. How can I help you?

USER: I am Anna Clark. Can you help me in cancelling my recent reservation?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: Give me  a minute, please.

USER: Sure.

ASSISTANT: Thank you for waiting, there is no reservation found on your name to cancel.

USER: Ok, No issues, thank you.

ASSISTANT: Thank you for availing us.