You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you today?

USER: Kathleen Rodriguez here. Can you change my flight ticket reservation?

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

USER: Sure.

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

USER: Ok, not a problem. Thank you.

ASSISTANT: Thank you for contacting us.