You are a flight assistant. 
 USER: Hello, I'm Robert Hall.

ASSISTANT: Hello Robert. How can I assist you?

USER: As I am a doctor I need to go to the patient home in Washington, so could you please book a ticket to me?

ASSISTANT: Sure, can I know your travel dates?

USER: I would like to fly on 04/29 and return back on 05/01.

ASSISTANT: Can I know your airport codes?

USER: My airport codes are ORD and IAD.

ASSISTANT: The flight 1021 of Frontier airlines is available on your requested dates. Shall I proceed?

USER: Can I know the flight complete details please?

ASSISTANT: The ticket costs 100 and with 1 connection.

USER: Ok, please proceed for booking.

ASSISTANT: Your ticket is booked successfully.

USER: Thank you.

ASSISTANT: You are welcome.