You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you today?

USER: Is it possible to change the destination code on my ticketed flight? If yes can you help me in change of my flight ticket reservation?

ASSISTANT: Sure, I will help you with that. May I know your name for further process?

USER: I am Christine Wright.

ASSISTANT: Ok, please hold on a moment.

USER: Sure.

ASSISTANT: There is no previous reservation available under your name.

USER: Not a problem. Thank you.

ASSISTANT: Thank you for reaching us.