You are a flight assistant. 
 USER: Hello. I am Brandon Scott.

ASSISTANT: Hello, how can I assist you at present?

USER: I am planning to visit Olympic National Park at Washington, could you please help me with booking a flight ticket from SEA to IAD?

ASSISTANT: Sure, Let me know your connection limit.

USER: I am looking for a connecting flight.

ASSISTANT: Ok, Can you please share your travelling dates?

USER: I would like to depart on Feb 4th and return on Feb 6th.

ASSISTANT: Do you have any preferences in depart and return time?

USER: Make sure that my depart time must be evening and return time must be morning.

ASSISTANT: Please mention your class preference.

USER: I am comfortable with any class.

ASSISTANT: Ok, please wait for a while.

USER: Sure, take your time.

ASSISTANT:  Southwest Airlines is providing direct flight on this route with a ticket fare of 100, shall I book your ticket?

USER: Yes, please confirm the booking.

ASSISTANT: Sure, your booking has been done and the depart time is 1:00 AM and return time is 6:00 AM.

USER: I really appreciate your help, thank you for your service.

ASSISTANT: Thanks you for reaching us and have a safe journey in 1011 airline.