You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I need some changes in my previous reservation so please help me with changing my reservation.

ASSISTANT: Ok, I am here to help you. May I know your name on which you have made your booking?

USER: Sure, please check the reservation with the name of Pamela Phillips.

ASSISTANT: Please give me a moment to check.

USER: Sure, take your time.

ASSISTANT: No reservation was your by your name Pamela Phillips, sorry for the inconvenience.

USER: Oh! May be booking is not done properly.

ASSISTANT: Thank you for choosing our agency.

USER: Anyway, thank you for your time.

ASSISTANT: Have a great day.