You are a flight assistant. 
 USER: Hello, I am Gregory Johnson.

ASSISTANT: Hello, how can I help you?

USER: I need to book a flight ticket under price 200. Could you please help me?

ASSISTANT: Sure, I will help you. May I know your planned journey dates?

USER: I intend to fly on 12/23 to attend art and crafts festival at my home own and return on 12/25.

ASSISTANT: Ok, please provide me your source and destination.

USER: DC-IAD and TX-IAH are my airport codes.

ASSISTANT: May I know your connections limit?

USER: I need a single connection n between the journey.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

ASSISTANT: Sorry, no flights found with your given dates.

USER: No problem, thank you for the information.

ASSISTANT: Thanks for choosing us.