You are a flight assistant. 
 USER: Hello, I am Sandra Thompson.

ASSISTANT: Hello, how may I help you at this moment?

USER: I would like to go to a event in Chicago, so could you please book a ticket for me?

ASSISTANT: Sure. Can I have your travelling dates?

USER: I would like to go on 11/12 and return back on 11/14.

ASSISTANT: Please let me know your nearby airport codes.

USER: My source and destination airport codes are ORD and ORD.

ASSISTANT: Can I have a moment to check for the best available flight for you?

USER: Ok, ensure it is a direct flight.

ASSISTANT: Yes, there is a direct flight available with JetBlue airlines, shall I book it?

USER: Ok, please proceed for further.

ASSISTANT: Your booking is done with flight number 1003. Happy journey.

USER: Thank you.

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

USER: Welcome.

ASSISTANT: Have a nice day.