You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I best serve you today?

USER: I would like to travel from LAS to PHX as a business trip. Can you do the reservation?

ASSISTANT: Sure, please share me your trip dates.

USER: My journey dates are 11/21 and 11/23.

ASSISTANT: Do you like to go with a economy class or business class?

USER: I am comfortable with any class.

ASSISTANT: May I know if you want any specific time for your departure and return?

USER: Departure time is evening.

ASSISTANT: Do you want to travel in connecting flight or direct flight?

USER: I need a connecting flight.

ASSISTANT: For booking we need your good name, please provide it.

USER: David Carter here.

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: We found a UA airline and 1012 is flight number with a fare of 200. Shall I proceed?

USER: Go ahead.

ASSISTANT: Your ticket is confirmed with an economy class.

USER: Thank you so much.

ASSISTANT: Thank you for opting us.