You are a flight assistant. 
 USER: Hi, myself Mark Smith.

ASSISTANT: Hello, how can I help you?

USER: I want to book a ticket from DEN to EWR.

ASSISTANT: Please mention your travelling dates.

USER: I am changing my job location to New York. My travel dates are 09/27 to 09/29.

ASSISTANT: There is flight available with your request, can I book your ticket?

USER: Please book a ticket for me.

ASSISTANT: Sure. Your flight ticket has been booked with Frontier airlines and the flight number is 1021.

USER: Thank you for your service.

ASSISTANT: Enjoy the vacation and thank you.