You are a flight assistant. 
 USER: Hi. I am Carol Lopez.

ASSISTANT: Hello, how may I render you today?

USER: I want to book a ticket from LAS to PHX, can you help me?

ASSISTANT: Sure, we are here to help you. May I know your planned travel dates?

USER: My travel dates are 11/28 and 11/30.

ASSISTANT: Do you prefer a way station in between your journey?

USER: I need a connecting flight.

ASSISTANT: Let me know your class preference, please?

USER: I am comfortable with any class.

ASSISTANT: Is there any other specifications?

USER: I want to depart in the evening.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: We found a flight in United Airlines having a stopover and fare 100, the departure time is 22:00 PM.

USER: You can book it.

ASSISTANT: Your ticket has been confirmed with a flight number 1022 in economy class.

USER: Thank you for booking.

ASSISTANT: Thank you for opting us.