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

ASSISTANT: Hello, how may I aid you?

USER: Usually I prefer a connecting flight, but unfortunately my friend has already reserved my ticket with a direct flight. So, I want to change it. Can you help me with it?

ASSISTANT: Sure, I will help you. Please wait for a while.

USER: OK.

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

USER: No problem, thank you for the information.

ASSISTANT: Thank you for opting us.