You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: My name is Ashley Mitchell.

ASSISTANT: Ok.

USER: I want to spend my summer vacations in Denver, CO - DEN, so please book a flight ticket from Austin, TX - AUS.

ASSISTANT: Ok, I will help you. May I know your travelling dates for booking a ticket?

USER: My departure day is 04/10, return day is 04/12.

ASSISTANT: What is your budget for the  flight ticket?

USER: My budget is 1000 only.

ASSISTANT: There is a Spirit 1024 airline with fare of 100. Shall I proceed with that airline?

USER: Yes, please.

ASSISTANT: Your booking has been confirmed on name of  Ashley Mitchell.

USER: Thank you.

ASSISTANT: Most welcome.