You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I am Linda Adams. Can you help me to book a flight from DCA to EWR?

ASSISTANT: Sure, I am obliged to help you in that plane ticket booking. Can you please share your moving dates for better searching of flight?

USER: My travelling dates are 06/03 and 06/05.

ASSISTANT:   Is there any another specifications on your trip, so that I can arrange like that only.

USER: I need a connecting flight from DCA.

ASSISTANT: Sorry to say, there is no flight found on your route to book your ticket.

USER: No issues, thank you for your time.

ASSISTANT: Welcome, have a good day.