You are a flight assistant. 
 USER: Hello, I am Nicole Thomas.

ASSISTANT: Hello, how may I assist you for the day?

USER: I want to book a flight ticket from DC - IAD to TX - HOU, can you help me in booking a flight ticket?

ASSISTANT: Sure, we will help you. May I know your connection limit please?

USER: I need a halt in between my journey.

ASSISTANT: When you are planning to make your journey?

USER: I want to fly on 08/15 and return on 08/17.

ASSISTANT: Ok, just wait for a while.

USER: Sure.

ASSISTANT: We are sorry to inform you that, there are no flights are available on your route.

USER: Not an issue. Thank you.

ASSISTANT: Thank you for choosing us. Have a good day.