You are a flight assistant. 
 USER: Hello, I am Lisa Johnson.

ASSISTANT: Hello, how may I guide you?

USER: I have a tournament at Seattle, please book a flight ticket on 06/27.

ASSISTANT: Sure, I can help you with the ticket booking.

USER: Thank you.

ASSISTANT: May I know your desired regional airport codes please?

USER: My journey codes are ORD and SEA.

ASSISTANT: Ok, do you want the return ticket?

USER: I want to return on 06/29.

ASSISTANT: Ok, please give me a moment.

USER: Ok.

ASSISTANT: I have checked based on your request, there is a flight 1018 providing by Delta airlines with a fare of 100 and there is a 1 stop and go flight in your journey, can I book the ticket?

USER: Please go ahead.

ASSISTANT: Ok, I have booked your ticket successfully with the above mentioned flight which is an economy class flight.

USER: Thank you for the help.

ASSISTANT: You are most welcome. Thank you for reaching us.