You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I need to change my reservation because of some crisis going on in my destination, can you help me in modifying my reservation?

ASSISTANT: Sure, I am here to aid you. Could you please tell me your full name? So that, I can check your previous reservation.

USER: Myself Elizabeth Phillips.

ASSISTANT: Ok, please hold on for a minute.

USER: That's ok, no problem.

ASSISTANT: Sorry Phillips, there is no reservation under your name in our records to modify.

USER: Thank you for your help.

ASSISTANT: My pleasure. Thank you for reaching us.