You are a flight assistant. 
 USER: Hello. I am Edward Robinson.

ASSISTANT: Hello, how may I assist you?

USER: I need to book a flight on 05/27 to met my friends.

ASSISTANT: Sure, may I know your airport codes?

USER: Could you please help me with booking a flight from Chicago, IL-ORD? My destination airport  is Dallas & Fort Worth, TX-DFW.

ASSISTANT: May I know when will be return on?

USER: I intend to return on 05/29.

ASSISTANT: We found a flight on your details with airline AA, flight number: 1025. Shall I book this ticket?

USER: You can proceed with booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you for your help.

ASSISTANT: Thank you so much.