You are a flight assistant. 
 USER: Hello, I am Mark Gonzalez.

ASSISTANT: Hello, how best I can support you today?

USER: Please book a ticket from IAD to HOU to attend Science festival. Can you please book a ticket on Oct 28?

ASSISTANT: Sure, let me know your return date please.

USER: I want to return on Oct 30.

ASSISTANT: Ok, please share your preferences.

USER: Ok, I usually prefer connected flight.

ASSISTANT: Ok, please wait.

USER: Ok.

ASSISTANT: Thanks for your patience, we found a connecting flight with a fare of 200 and the departure time is 2:00 AM. Shall I proceed in economy class?

USER: Ok, please confirm.

ASSISTANT: Ok, your ticket has been confirmed in 1024 Southwest airline and the arrival time is 16:00 PM.

USER: Ok, Thank you.

ASSISTANT: Thank you for contacting us.