You are a flight assistant. 
 USER: Hello.

ASSISTANT: Please let me know, what kind of service your looking for?

USER: I am planning to visit Dallas to meet my friend, can you please book me a ticket from IAD to DFW?

ASSISTANT: Sure, please share me your trip dates.

USER: My preferable journey dates are Mar 31 and Apr 02.

ASSISTANT: Do you need direct flight or connecting flight?

USER: I prefer connecting flight for this trip.

ASSISTANT: Is there any class preferences for you?

USER: I would like to travel in normal cost airlines.

ASSISTANT: Please share me your other preferences.

USER: No.

ASSISTANT: May I know your good name?

USER: My name is Stephanie Collins.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: We found a UA airlines and 1013 is flight number with a fare of 100. Shall I proceed?

USER: Please reserve my ticket in this flight.

ASSISTANT: Your ticket is confirmed with an economy class.

USER: Thank you for booking my ticket.

ASSISTANT: Thank you for opting us.