You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

USER: I will travel from LAS to MSP for my project work, can you please help me to book my flight ticket?

ASSISTANT: Sure, help me with the trip dates?

USER: Thank you. I have to start my journey on Mar 21st and return back in the morning on Mar 23rd.

ASSISTANT: May I know your good name please?

USER: My name is Elizabeth Taylor.

ASSISTANT: Do you have any preferences?

USER: I need a flight having single connection.

ASSISTANT: There is a flight in an airline United with 1003 number having a single connection in an economy class which returns in the morning. Shall I proceed to book?

USER: That's perfect! You can book the ticket.

ASSISTANT: Your flight ticket has been booked.

USER: Thank you so much.

ASSISTANT: Thank you for opting us.