You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I be at your service today?

USER: Can you help me to book a flight ticket from PHX to DCA?

ASSISTANT: Sure, I will help you in booking the ticket. May I know your travelling dates please?

USER: Jan, 1 and Jan, 3 are my trip dates.

ASSISTANT: Do you have any other specifications?

USER: I need to depart at morning time with connecting flight.

ASSISTANT: Please help me with your name for booking.

USER: Samantha Martinez here.

ASSISTANT: Sorry, no flights are available on your journey routes.

USER: Not a problem, thank you for the information.

ASSISTANT: Thank you for choosing us.