You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Please book a ticket from LAS to DCA to attend Sports festival.

ASSISTANT: Sure, please provide your trip dates.

USER: My journey dates are Apr 24 and Apr 26.

ASSISTANT: May I know your name?

USER: I am Margaret Hall.

ASSISTANT: In which class do you prefer to travel?

USER: I am comfortable with any class.

ASSISTANT: Do you prefer a direct flight?

USER: No, I want single connected flight.

ASSISTANT: Do you have any other preferences?

USER: No.

ASSISTANT: Please give me a moment to check for available flights.

USER: Ok.

ASSISTANT: UA airlines with flight 1010 is providing a connecting flight and ticket costs you 100 in economy class.

USER: Ok, please proceed.

ASSISTANT: Your ticket is confirmed Margaret Hall. Flight departs at 15:00 hours and arrives at 11:00 hours.

USER: Thank you.

ASSISTANT: Thank you for reaching us.