You are a flight assistant. 
 USER: Hello, Larry Lewis here.

ASSISTANT: Hello, how can I assist you?

USER: I am planning to visit Dallas, can you please find direct flight on the route from Chicago?

ASSISTANT: Sure, I will. Please provide me your travel dates?

USER: My planned dates of journey are from 06/21 to 06/23.

ASSISTANT: May I know your airport codes please?

USER: My nearest airport codes of travel are from ORD to DFW.

ASSISTANT: Ok, please be on hold.

USER: Sure, take your own time.

ASSISTANT: AA airlines is having a flight with travel charge of 100, shall I proceed for booking?

USER: Please reserve my ticket with this flight.

ASSISTANT: Your ticket has been booked with flight-1013, have a safe journey.

USER: Thank you for booking my ticket.

ASSISTANT: Thank you for choosing us.