You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What help are you looking for?

USER: My boss said me to book his ticket, as he want to visit Seattle for his project work, can you please help me to book his ticket?

ASSISTANT: Sure, I will help you with booking your flight ticket. Could you please let me know the name on whose the flight ticket has to be booked?

USER: Yes, her name is Janet Garcia.

ASSISTANT: Ok. Can you please tell me the source and destination airport codes?

USER: Sure, she want to travel from DCA to SEA.

ASSISTANT: Well. Could you please let me know the travel dates?

USER: Yes, she want to depart on 11/18 and return from SEA on 11/20.

ASSISTANT: Ok, please give me a moment to search for the available flights which matches your schedule.

USER: Sure, take your time.

ASSISTANT: Thank you for your patience. Southwest airlines with flight number 1008 is available for you with single connection. Do you want me to proceed the booking process?

USER: Yes, please proceed.

ASSISTANT: I was able to book the ticket successfully.

USER: Thank you very much.

ASSISTANT: Thank you for approaching us.