You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: I want to book a ticket from PHX to LAS. Could you book a ticket?

ASSISTANT: Sure, may I know your planned travel dates please?

USER: Departure is Oct, 30 and return date is Nov, 1.

ASSISTANT: Can I have your name please?

USER: My name is Emma Lewis.

ASSISTANT: Do you need a connecting flight?

USER: I prefer connecting flight.

ASSISTANT: Do you have any other specifications?

USER: I prefer to fly in a normal-cost airline.

ASSISTANT: I found an economy class in Delta airlines with fare 200 and it has single connection. Can I book your ticket?

USER: Please book a flight.

ASSISTANT: Ok, your booking is confirmed with flight number 1010.

USER: Thank you.

ASSISTANT: Thank you for choosing us.