You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am Alexander Rodriguez. Can you help me in cancelling my recent reservation?

ASSISTANT: Sure, I am happy to help you. Please wait, let me check your reservation status in our database.

USER: Sure.

ASSISTANT: Sorry, I have not found any reservation under your name in our database.

USER: It's ok, no problem. Thank you for checking.

ASSISTANT: You are most welcome and thank you for choosing us.