You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I want to change my existing reservation due to my board exams. Can you help me for this one.

ASSISTANT: Sure, I will help you. May I know your good name?

USER: Sure, Matthew Jackson here.

ASSISTANT: Please wait a minute, I will check the reservation list.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no active reservation on your name.

USER: No issues, thank you for the information.

ASSISTANT: Thank you.