You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I am planning to meet my colleague in Seattle, so please book a flight ticket from PHX to SEA.

ASSISTANT: Can I know your journey dates?

USER: I want to fly on Nov 20, return on Nov 22.

ASSISTANT: Do you prefer connecting flight?

USER: I need a connecting flight.

ASSISTANT: Is there any other requirement?

USER: No.

ASSISTANT: May I know your name?

USER: My name is Christine Jones.

ASSISTANT: Connecting flight can be booked with Frontier airlines for price 100. Shall I book a ticket?

USER: Ok, proceed to booking.

ASSISTANT: Your ticket is booked in an economy class having flight number 1017.

USER: Thank you.

ASSISTANT: Thank you.