You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you?

USER: I am Justin Roberts, can you help me to book a flight from DCA to EWR?

ASSISTANT: Sure, may I know your journey dates please?

USER: My travelling dates are 04/13 and 04/15.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: Justin, I found a flight for you in UA airlines with fare 100. Can I proceed?

USER: Proceed with booking.

ASSISTANT: Ok, your ticket has been booked with flight number 1007.

USER: Thank you.

ASSISTANT: Thank you for reaching us.