You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: Myself Elizabeth Wright. I was not satisfied with your services with Delta airlines so, I will be changing my reservation. Help me in changing my reservation with some other airlines.

ASSISTANT: Sorry for the inconvenience, Elizabeth. Please allow me a moment while I check for the previous reservation and help you with finding flight with best airlines.

USER: Ok, please check for a flight with some other airlines. I can effort with high price but the service should my excellent.

ASSISTANT: Sure. Elizabeth, I see that there is no reservation found under your name in our data base.

USER: Oh! How is that possible, I would like to talk with your manager regarding my previous reservation.

ASSISTANT: I have checked with our higher authorities, but still we could not find any reservation under your name.

USER: Ok, but I am dissatisfied with your services also. I would suggest your agency to improve your services.

ASSISTANT: Thank you for your feedback. We will try to improve our service.

USER: Anyways, thank you for checking with your booking.

ASSISTANT: You are welcome.