You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I provide assistance to you?

USER: Could you please book a flight ticket from SFO to LAS?

ASSISTANT: Sure, can I know your good name please?

USER: My name is Sharon Anderson.

ASSISTANT:  When you are willing to travel?

USER: I want to travel on Feb 11 and return on Feb 13.

ASSISTANT: Do you need direct flight or connecting flight?

USER: I need a connecting flight.

ASSISTANT:  Would you let us know if you have any other preferences?

USER: I don't have any other specifications.

ASSISTANT: We found a direct flight 1012 in Southwest airlines at the price of 100 with economy class. Shall I proceed?

USER: Ok, proceed.

ASSISTANT: Your booking is done.

USER: Thank you.

ASSISTANT: Thank you for choosing us.