You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Brenda Roberts. While checking my recent reservation status I mistakenly cancelled my reservation and again I need booking to DCA from LAX, could you mind help me in booking?

ASSISTANT: On which dates you are willing to travel?

USER: I want to travel on 07/03 and want to return on 07/05.

ASSISTANT: There is a flight which can travel to your region having a single lay out in between your journey having a ticket fare of 200 which is provided by Delta airlines. Would you like to book this flight for your journey?

USER: Please proceed with the booking.

ASSISTANT: Your ticket is booked.

USER: Thank you.

ASSISTANT: Welcome.