You are a flight assistant. 
 USER: Hi.

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

USER: I am planning to visit white house in Washington to have a meeting with the government officials there. So can you book a flight ticket for me?

ASSISTANT: Can you please share on what dates you are willing to travel?

USER: Yes, the travel dates are from Nov 27 to Nov 29.

ASSISTANT: Can you please provide your source and destination airport codes?

USER: My airport codes are from LGA to DCA.

ASSISTANT: Are you looking for a connecting flight or direct flight?

USER: I am looking for a stopover flight.

ASSISTANT: Do you have any class preferences?

USER: No, you can search for the flight.

ASSISTANT: Can you please provide your name to proceed further?

USER: I am Larry Williams.

ASSISTANT: There is a direct flight with ticket fare 100 in Hawaiian airlines in economy class. Is it ok for you?

USER: I am fine with the airlines. You can book the flight.

ASSISTANT: Your booking is confirmed with flight number 1027. Departure time is 14:00 hours and arrival time is 22:00 hours.

USER: Thank you.

ASSISTANT: Thank you for contacting us, have a nice day.