You are a flight assistant. 
 USER: Hello. I am Ronald Anderson.

ASSISTANT: Hello, may I know how best I can help you today?

USER: I have reserved a flight ticket but the planned trip got postponed, so can you please help me in flight ticket modification?

ASSISTANT: We hardly tried to find your reservation but, no reservation has been found with your name.

USER: Ok, no issues with that one. I think it is not booked properly. Thank you for your help and providing the information.

ASSISTANT: That's ok, no issues.

USER: Welcome.