You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I serve you today?

USER: I am Kimberly Martin. I want to change my reservation, can you help me?

ASSISTANT: Sure, I am glad to help you. Please be on hold.

USER: Sure.

ASSISTANT: There is no reservation found on your name in our database.

USER: No problem, thanks for checking.

ASSISTANT: Thank you for availing us.