You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Elizabeth Walker.

ASSISTANT: How may I help you?

USER: Can you please help me in cancelling my recent reservation?

ASSISTANT: Sure, I am here to help you. Let me check your reservation status in our database.

USER: Ok, sure.

ASSISTANT: Walker, sorry for inconvenience no reservation is found on your name in our database.

USER: Ok, fine thank you for checking.

ASSISTANT: You are most welcome.