You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I serve you today?

USER: My name is Alexander Gonzalez. I just need your help in cancelling my recent reservation.

ASSISTANT: I would be happy to help you with that.

USER: Thank you.

ASSISTANT: Please wait for a minute. I am sorry to say that there is no reservation found.

USER: It's ok, thank you for the information.

ASSISTANT: Thank you for reaching us.