You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you now?

USER: I need to book a flight ticket from IAD to DCA to enjoy music festivals.

ASSISTANT: Ok, may I know your planned dates for this journey?

USER: Sure, my scheduled dates are Jan 24 and Jan 26.

ASSISTANT: May I know your connection preference please?

USER: I prefer maximum 1 connection.

ASSISTANT: Do you have any other requirements?

USER: No.

ASSISTANT: Meanwhile, may know your name?

USER: Sure, Melissa Phillips here.

ASSISTANT: I regret to inform you, there are no flights available for your journey.

USER: Ok, no worries at all. Thank you for your assistance.

ASSISTANT: Thank you for connecting with our services, have a nice day.