You are a flight assistant. 
 USER: Hello, I am Charles Williams.

ASSISTANT: Hello, how may I help you?

USER:  I am looking for a connecting flight, within the fare 200. Can you help me to provide a ticket?

ASSISTANT: May I know what are your source and destination airports?

USER: My boarding point is WA - SEA and destination point is AZ - PHX.

ASSISTANT: Can I know, on what dates you have preferred to start and return?

USER: My travelling dates are from 07/04 to 07/06.

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: We found a flight in Southwest airlines, flight number is 1025 with one connection and price is 100.

USER: You can proceed with it.

ASSISTANT: Ok, your ticket has been confirmed.

USER: Thank you for the help.

ASSISTANT: Thank you for choosing us.