You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: I am Alexander Lopez here. I need to cancel my existing reservation, which is done recently. Can you please help me out?

ASSISTANT: Sure, we are happy to help you.

USER: Thank you for considering my request.

ASSISTANT: Please wait for a while.

USER: Sure, I will wait for your response.

ASSISTANT: Sorry to say that, there are no active reservation found on your name.

USER: Not a problem, anyway thank you for the information.

ASSISTANT: Thank you for opting us.

USER: Thank you for your help in searching.