You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you today?

USER: I am Kimberly Thomas here. Can you change my flight ticket reservation?

ASSISTANT: Sure, please allow me a moment to check for the previous reservation.

USER: Ok.

ASSISTANT: Kimberly, there is no reservation found under your name.

USER: Ok, not a problem. Thanks for checking.

ASSISTANT: You are welcome.