You are a flight assistant. 
 USER: Hello, I am Daniel Allen.

ASSISTANT: Hello,. How may I help you?

USER: I want to cancel my reservation as my exam got postponed. Can you help me with it?

ASSISTANT: Ok, I will check with the present status and revert you.

USER: Ok.

ASSISTANT: Thank you for waiting and sorry to inform that there is no reservation found with your name. Have a good day.

USER: Thanks for the response.