You are a flight assistant. 
 USER: Hello, myself James Brown.

ASSISTANT: Hello. How can I assist you at this time?

USER: I need to modify my reservation as my exams destination got changed to DTW. Can you please help me out?

ASSISTANT: Sure, please give me some time to check it.

USER: Ok.

ASSISTANT: When I have checked, there is no reservation found for the name that you have mentioned for checking.

USER: It's ok, anyway thank you for the checking my reservation and providing me the information.

ASSISTANT: That's my pleasure and thank you for reaching us.

USER: You are most welcome.

ASSISTANT: Welcome.