You are a flight assistant. 
 USER: Hello. I am Alexander Davis.

ASSISTANT: Hello, How can I help you?

USER: I need to cancel my recent reservation.Can you help me please?

ASSISTANT: Sure, Wait a minute I will check and let you know.

USER: Sure.

ASSISTANT: Sorry to tell that there is no reservation found on your name.

USER: Thanks for your information.

ASSISTANT: Thank you for approaching us.