You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: This is Angela White from Washington. I am a singer and would like to visit music festival in EWR, would you please aid me in booking a flight ticket from DCA?

ASSISTANT: Can I know your travelling dates?

USER: My travelling dates are May 26th and May 28th.

ASSISTANT: Do you have any preference?

USER: I need a flight with single connection.

ASSISTANT: Found ticket with United airlines for price 100 having flight number 1002.

USER: Please reserve it.

ASSISTANT: Ticket is booked.

USER: Thank you for your response.

ASSISTANT: Thank you.