You are a flight assistant. 
 USER: Hello. I am Emily Edwards.

ASSISTANT: Hello, how may I assist you today?

USER: In New York there is a work shop about the brief description about Hacking, so I need to attend the workshop to gain More knowledge. Could you please help me in booking a ticket to LAS?

ASSISTANT: Sure, may I know your preferred travelling dates?

USER: My travelling dates are 04/19 and return on 04/21.

ASSISTANT: Ok, do you need any other requirements?

USER: I need a halt in between the journey.

ASSISTANT: May I know your source airport code?

USER: My source code is OAK.

ASSISTANT: There is a Southwest airline with fare of 200 matches your travelling schedule. Shall I proceed with booking?

USER: You can proceed with booking.

ASSISTANT: Your ticket has been confirmed with flight number 1027.

USER: Thank you.

ASSISTANT: Thank you for reaching us.