You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Michelle Harris here. I have a press meet to attend , so could you please book me a ticket from DCA to EWR.

ASSISTANT: May I know your trip dates?

USER: My travel dates are as follows May 20 and May 22.

ASSISTANT: Do you prefer any specifications?

USER: Yes, I would like to travel by a connecting flight.

ASSISTANT: Are you looking for any airline preference?

USER: No. Thank you for asking.

ASSISTANT: Frontier airlines is providing a connected flight with the fare 200.

USER: Please proceed for booking.

ASSISTANT: Your booking is done.

USER: Its a pleasure, thank you for the assistance.

ASSISTANT: Thank you.