You are a flight assistant. 
 USER: Hello, I am George Nelson.

ASSISTANT: Hello, how can I assist you?

USER: As my schedule to attend for semester exams got postponed, I want you to change my reservation. Can you please help me?

ASSISTANT: Sure, Please wait a minute.

USER: Ok.

ASSISTANT: Thanks for waiting, we did not find any reservation with your name.

USER: It's ok, no problem. Thank you for your kind information.

ASSISTANT: Thank you for reaching us.