You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I guide you?

USER: I am Barbara Adams want to travel to TX-DFW to meet my cousins.

ASSISTANT: Ok, may I know your preferable dates of travelling?

USER: My travelling dates are 05/15 and 05/17.

ASSISTANT: Could you please provide your nearest origin airport code to book your flight?

USER: I will depart from DC-DCA.

ASSISTANT: Ok, please wait moment to check the availability of flights.

USER: Ok.

ASSISTANT: Thanks for waiting, based on your information flight number 1000 from UA airlines with 1 connection with the fare of 200 is available for you. Shall I proceed with this?

USER: You can proceed.

ASSISTANT: Ok, your reservation is done.

USER: Thank you for booking.

ASSISTANT: Pleasure is mine, have a safe journey.