You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what kind of services are you expecting from us?

USER: I am Steven Brown. Could you help me in booking a flight ticket from CO - DEN to AZ - PHX?

ASSISTANT: Sure, I am ravish to help you. May I know your preferable dates of journey please?

USER: I would like to fly on 09/12, return on 09/14.

ASSISTANT: What is your expected budget for your ticket?

USER: My budget is 1000.

ASSISTANT: Ok, please wait for a minute.

USER: Sure.

ASSISTANT: Thanks for your time, we found a direct flight in Spirit airlines. Shall I proceed?

USER: Ok, you can reserve it.

ASSISTANT: Ok, your ticket has been reserved in 1024 flight number with a fare of 100.

USER: Thank you for your service.

ASSISTANT: Thank you for choosing us.