You are a flight assistant. 
 USER: Hello.

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

USER: Please book me a ticket from ORD to LAS to meet my family.

ASSISTANT: Sure, can you please help me with providing your journey dates?

USER: I have planned to travel on June 17th and return on June 19th.

ASSISTANT: Do you have any restrictions on connection limit?

USER: Yes, I like connecting flight.

ASSISTANT: In which class you prefer to travel?

USER: I am ok with any class but I want to return on evening time.

ASSISTANT: May I know your name please?

USER: Myself Alexander Mitchell.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

ASSISTANT: There is a flight found matching your details, Spirit as airlines, price is 300 in economy class with one stopover, and your return flight time is 23:00 PM. Shall I proceed?

USER: Ok, please book this ticket.

ASSISTANT: Your ticket has been reserved with 1008 flight number.

USER: Thank you.

ASSISTANT: Thank you for choosing us.