You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you today?

USER: I need to book a flight ticket from IAD to HOU to enjoy music festivals. Can you help me in booking a flight ticket?

ASSISTANT: I am glad you have a contacted us. I will help you. Please help me with your name.

USER: Sure, Stephanie Carter here.

ASSISTANT: Please help me with your planned travelling dates.

USER: Sure, my scheduled dates are Sep 11 and Sep 13.

ASSISTANT: Please help me with your preferred class to fly.

USER: I am comfortable with any class.

ASSISTANT: Do you need a direct or connecting flight?

USER: I need a connected flight.

ASSISTANT: Do you have any other preferences in your journey?

USER: No.

ASSISTANT: Stephanie Carter, I am really sorry to inform you that there are no active flights being operated in your route of journey.

USER: Ok, no issues. Thank you for your assistance.

ASSISTANT: Thank you for approaching us. Have a great time.