You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: I need to attend workshop in Las Vegas, can you please reserve a flight ticket from DCA to LAS?

ASSISTANT: Sure, I am here to help you out. Can you please share your travel dates?

USER: My journey dates are on Aug 20th and 22nd.

ASSISTANT: Do you have any connection limit?

USER: I prefer a flight with one connection.

ASSISTANT: May I know your airline preference?

USER: I am comfortable to travel in any airlines.

ASSISTANT: In which class do you prefer to travel?

USER: I am ok with any class.

ASSISTANT: Do you have any specific departure and arrival time?

USER: No.

ASSISTANT: May I know your name to proceed further?

USER: Sandra Gonzalez is my name.

ASSISTANT: Frontier airlines is having a flight with a ticket fare 200, shall I proceed with booking?

USER: Ok, proceed with the booking.

ASSISTANT: Your ticket is confirmed with the flight-1017 in economy class.

USER: Thank you for your help.

ASSISTANT: Welcome, have a safe trip.