You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you for today?

USER: Please help me to book a flight to travel from SFO to IAD.

ASSISTANT: I am happy to assist you about that. Can you please provide your planned dates of journey?

USER: I will travel on April 10th and 12th.

ASSISTANT: Can you please let me know your name for booking purpose?

USER: Sure, my name is Ryan King.

ASSISTANT: Do you need any connecting flight for this trip?

USER: I am fine with it.

ASSISTANT: Do you have any other requirements for your journey to met with?

USER: I want to depart in the afternoon time.

ASSISTANT: As per your requirements, I have found a connected flight to your region on your planned dates of journey which departures in the afternoon having a ticket fare of 100 by Southwest airlines. Shall I proceed with the booking?

USER: Please proceed if it is in economy class.

ASSISTANT: I have booked your flight ticket with the flight 1013.

USER: Thank you for your help.

ASSISTANT: You are welcome, thank you for employing our service.