You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How could I aid you?

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

ASSISTANT: Sure, can I know when you are planning to travel?

USER: My trip dates are 11/20 - 11/22.

ASSISTANT: Is there any other requirements, please let me know?

USER: I need a single connection.

ASSISTANT: May I know your name please?

USER: Mary Davis here.

ASSISTANT: We are glad to inform you that there is a flight available with an United airline of flight 1021 in an economy class with single connection.

USER: Please reserve.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you.