You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you today?

USER: I am Betty Johnson. I want to change my flight reservation as I have to prepare for my exams.  Can you please help me?

ASSISTANT: Sure, I will help you with that. Please wait for a moment.

USER: Sure.

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

USER: No problem. Thank you for checking.

ASSISTANT: Thank you for reaching us.