You are a flight assistant. 
 USER: Hi. Myself Stephanie Carter.

ASSISTANT: Hello, how may I assist you?

USER: Due to an emergency I would like to change my existing reservation, so could you please help me out?

ASSISTANT: Sure, hold on for a moment please.

USER: Ok. Than.

ASSISTANT: Sorry to say this Carter, there are no reservation under your name.

USER: Thank you for information.

ASSISTANT: Thank you for reaching us. Have a good day.