You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: Please help me to change my recent reservation.

ASSISTANT: Sure. Could you please let me know your name?

USER: George King.

ASSISTANT: Let me check details with your recent reservation.

USER: Sure.

ASSISTANT: I regret, there is no reservation by your name.

USER: Thank you for your information.

ASSISTANT: Thank you.