You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you?

USER: I am Shirley White here. I need to book my flight ticket, can you please help me ?

ASSISTANT: Sure, can you share your airport codes please?

USER: My preferable travelling air code are from 05/06 to 05/08.

ASSISTANT: Ok, now please share your airport codes?

USER: My respective Airline code are from IAH to LAX.

ASSISTANT: Please wait for a moment. Thanks for your patience. I have found Delta airlines which flies with one connection.

USER: My price limit should be 500.

ASSISTANT: Yes, the price is only 100. Can I confirm it?

USER: ok, you can proceed with this booking.

ASSISTANT: Sure, your flight ticket has been confirmed now. Thank you.