You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I guide you today?

USER: My name is Kevin Moore. I would like to meet my father on his birthday, can you please help me to book my flight ticket from SFO to DCA?

ASSISTANT: Sure, I am glad to help you with that. Can you please provide your preferable dates of travelling?

USER: Sure, I have to depart on Aug 20th and I will return back on Aug 22nd.

ASSISTANT: Please wait a moment to check the flights on your route.

USER: Sure.

ASSISTANT: Based on your travel details, I have found a flight with a single connection with a fare of 200 from Delta airlines. If you are ok with this, please inform me to book the flight.

USER: Yes, I am ok with it. Please proceed for booking the ticket.

ASSISTANT: Ok, your ticket has been confirmed in flight number 1001 in economy class.

USER: Thank you so much for helping me.

ASSISTANT: Thank you for reaching us, have a great journey.