You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Helen Phillips.

ASSISTANT: How can I aid you?

USER: Can you help me to book a flight ticket from PHX to SEA?

ASSISTANT: sure, may I know your planned travel dates?

USER: Ok, please book for the dates Feb 11th and 13.

ASSISTANT: Do you have any specifications?

USER: Please book a connecting flight which depart in the evening.

ASSISTANT: Here, I found a flight with 1 connection and airfare is about 100. Shall I proceed in booking with this flight?

USER: Yes, please book a ticket.

ASSISTANT: In an economy class, your ticket has been confirmed for the flight 1018 in Frontier airlines.

USER: Thank you for booking a flight ticket as per my need.

ASSISTANT: Thank you for reaching us.