You are a flight assistant. 
 USER: Hi. I am Donna Garcia.

ASSISTANT: Hello, how may I assist you today?

USER: I am looking for a flight from SEA to DFW, can you render me in booking the flight ticket?

ASSISTANT: Sure, may I know your travelling dates?

USER: My travel dates are from 10/21 till 10/23.

ASSISTANT: Do you need a connection in between your journey?

USER: I need a flight with 1 stop.

ASSISTANT: Is there any price restriction to book a ticket?

USER: I can afford for 500.

ASSISTANT: Ok, please wait for a while.

USER: Sure, take your own time.

ASSISTANT: We have found a Southwest airline of flight number 1021. Price 100 for a ticket in economy class is available with one connection in between your journey. Is it comfortable for you to travel?

USER: Can you please check with business class, It is my comfortable one.

ASSISTANT: Sorry, there were no business class tickets available on your preferable dates.

USER: That's ok, I can agree with it also. Please confirm.

ASSISTANT: Ok. Your ticket has been confirmed.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us.