You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you today?

USER: I am Melissa Phillips. I want to attend a food festival at Phoenix. Can you please book a flight ticket from SEA to PHX?

ASSISTANT: Sure, I am happy to help you. May I know that when you have planned to travel?

USER: My planned travel dates are Nov, 18 and Nov, 20.

ASSISTANT: Ok, please share your airline preference.

USER: I am comfortable with the lower cost airlines.

ASSISTANT: Is there any connection limit for you?

USER: Yes, I need a connecting flight.

ASSISTANT: Thanks for your details, please wait.

USER: Sure.

ASSISTANT: Thank you for waiting, we found a direct flight with a fare of 200 in 1018 flight. Shall I proceed?

USER: Ok, you can proceed.

ASSISTANT: Ok, I have booked your ticket in Southwest airline.

USER: Thank you for the help.

ASSISTANT: Thank you for visiting us.