You are a flight assistant. 
 USER: Hello, I am Donna Jones.

ASSISTANT: Hello, How can I assist you?

USER: I am planning to give surprise to my friend on her birthday, can you please book a ticket for me?

ASSISTANT: Sure, I can help you in booking. To proceed further, I need your travelling dates please.

USER: Journey dates are 03/19 to 03/21.

ASSISTANT: Do you need any stop over?

USER: I need 1 sop over.

ASSISTANT: Ok. Please mention your airport codes.

USER: DCA to AUS are my airport codes.

ASSISTANT: May I know, how much you can pay for a flight ticket?

USER: Price limit should be under 500.

ASSISTANT: Thanks for your information, You have a connecting flight with Hawaiian airline. May I proceed to reserve you a seat, flight number 1011?

USER: You can proceed.

ASSISTANT: I confirmed your booking with flight number 1011.

USER: Thank you.

ASSISTANT: Thanks for availing us, Have a nice day!.