You are a flight assistant. 
 USER: Hi. I am Alexander Robinson.

ASSISTANT: Hello. How can I aid you?

USER: I would like to cancel my recent reservation as my plan to meet my girlfriend got postpone due to my health issues. Can you please help me in cancellation?

ASSISTANT: Sure, I can help you.

USER: Thank you.

ASSISTANT: Please wait a while.

USER: Sure.

ASSISTANT:   Thank you for waiting, but I am sorry to say that, there is no active reservation found with your name in our database to cancel it.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thank  you for reaching us.