You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you today?

USER: Please help me in changing my recent reservation.

ASSISTANT: Sure, I will help you. Please help me with your name.

USER: I am Edward Phillips.

ASSISTANT: Edward Phillips, I am really sorry to inform you that there is no booking found on your name.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for reaching us. Have a great time.