You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. May I know your concerns?

USER: Actually my Business meeting is postponed, so that I want to cancel my recent reservation. Can you help me?

ASSISTANT: May I know your name please to check?

USER: Sure, I am Alexander Hernandez.

ASSISTANT: There is no reservation found on your name.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you for choosing our agency.