You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: My exams got postponed, can you please help me in changing my reservation?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: Please share your name.

USER: I am Brandon Robinson.

ASSISTANT: Ok, please wait for a moment.

USER: Ok.

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

USER: Ok, no issues. Thank you for your information.

ASSISTANT: Thank you for choosing us.