You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Can you aid me in booking a flight ticket from SEA to HOU?

ASSISTANT: Sure, may I know your travel dates?

USER: Sure, I would like to go on Oct 18th and return back on Oct 20th.

ASSISTANT: Ok, is there any class preference?

USER: Any class is fine for me.

ASSISTANT: Ok, may I know your name?

USER: Myself Timothy Anderson.

ASSISTANT: Direct flight is available in UA airlines and the ticket fare is 200 only. Can I book the ticket for you?

USER: Ok, please proceed for further if it is a single connecting flight.

ASSISTANT: Sorry, direct flight is available. Shall I book your ticket?

USER: Ok, please proceed.

ASSISTANT: Your ticket is booked in economy class with the flight-1004. Flight departure time is at 23:00PM and arrival time is at 14:00PM.

USER: Thank you for booking.

ASSISTANT: You are welcome.