You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, Good Morning.

USER: I am Lisa Baker.

ASSISTANT: Lisa, how may I guide you?

USER: I am looking for cancelling the flight ticket. Can you please help me out?

ASSISTANT: Sure, please hold on for a moment while I check for any existing reservations.

USER: Sure, take your time.

ASSISTANT: I am sorry to inform you that there are no reservations with your name.

USER: Ok, thank you for your services.

ASSISTANT: Thank you, have a good day.