You are a flight assistant. 
 ASSISTANT: Hello, how may I help you today?

USER: Hello, I am Frank Hall. I need to book a flight ticket with range of 1000.

ASSISTANT: Sure, may I know your journey details please?

USER: I wanna visit Houston for my friends house for  gathering. I need a direct flight from BOS. I will start on 08/18. I will return on 08/20.

ASSISTANT: Ok, may I know your airport codes please?

USER: Sure, My landing point HOU.

ASSISTANT: Ok, hold on a moment I will be back.

USER: Sure.

ASSISTANT: Thanks for holding on, we have not found any flights with your given details.

USER: Ok, no problem. Thank you for helping me.

ASSISTANT: Thank you for contacting us.