You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: Could you help me to amend my existing reservation?

ASSISTANT: Can I know your name?

USER: I am Donna Wright.

ASSISTANT: Let me check status with your recent reservation.

USER: Sure.

ASSISTANT: Sorry, there is no reservation by your name.

USER: Not a problem, thank you for the information.

ASSISTANT: Thank you.