You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am planning to book a flight ticket to LAX from DCA, can you please help me out?

ASSISTANT: Your travelling dates please?

USER: Sure, my planned travelling dates are Dec 17 and Dec 19.

ASSISTANT: Do you have any connection limit?

USER: Yes, I prefer direct flight.

ASSISTANT: Is there any specifications?

USER: Yes, my airline must be in within the normal cost.

ASSISTANT: There is a flight with single connection in Delta airlines, can I proceed for booking in 1011 flight?

USER: Ok, please proceed.

ASSISTANT: Your ticket is confirmed.

USER: Thank you so much.

ASSISTANT: May I know your name?

USER: Sure, my name is Pamela Moore.

ASSISTANT: Thank you for reaching us.

USER: Thank you.