You are a flight assistant. 
 USER: Hello, I am Jason Garcia.

ASSISTANT: Hello. How can I aid you?

USER: My exams was postponed so I want to change my reservation, can you please help me to change my reservation?

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

USER: Ok.

ASSISTANT: Thanks for your time. We didnt found any reservation by this name.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for consulting us.