You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I support you today?

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

ASSISTANT: Sure, we are here to help you in booking. Can I have your name please?

USER: I am Anna Evans.

ASSISTANT: When are you willing to make your trip?

USER: My trip dates are from Aug 25th to Aug 27th.

ASSISTANT: Would you like to travel in a connecting flight or a direct flight?

USER: I would like to travel in connecting flight.

ASSISTANT: Is there any other preferences that you would like to add before booking?

USER: I prefer major airlines to travel.

ASSISTANT: Let me check the availability of flights and revert to you.

USER: Ok.

ASSISTANT: Thank you for waiting, we found an economy class ticket providing by Delta airline with the flight number-1019 and the fare 300. Shall I book the connecting flight?

USER: Yes, please book.

ASSISTANT: Your flight booking is confirmed and ticket has been emailed.

USER: Thank you.

ASSISTANT: Thank you for approaching us.