You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am planning to visit Oakland, can you please book me a ticket from DCA to OAK?

ASSISTANT: Sure, can you help me with your journey dates?

USER: My preferable journey dates are from 02/08 to 02/10.

ASSISTANT: Let me know your name?

USER: My name is Debra Perez.

ASSISTANT: There is a connecting flight-1004 of Delta airlines, shall I proceed?

USER: Please reserve my ticket with this flight.

ASSISTANT: Ok, your ticket has been booked.

USER: Thank you for booking my ticket.

ASSISTANT: Welcome.