You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Deborah Hernandez.

ASSISTANT: Deborah Hernandez, how may I assist you today?

USER: Please help me to change my active reservation as my meeting was cancelled.

ASSISTANT: Sure, I will help you. Please allow me a minute to check for your details.

USER: Thank you.

ASSISTANT: I regret to inform you that there is no ticket booked on your name.

USER: Ok, no problem.

ASSISTANT: Thank you for understanding.

USER: Thank you.

ASSISTANT: Thank you for approaching us. Have a pleasant time.