You are a flight assistant. 
 USER: Hello, I am Margaret Turner.

ASSISTANT: Hello, how may I oblige you today?

USER: Please book me a plane ticket with in price 500.

ASSISTANT: Sure, can you please share your airport codes?

USER: My origin is HOU and destination is BOS.

ASSISTANT: May I know your journey dates?

USER: I need to start on 04/19 as I have a meeting with my manager on the next day and would return on 04/21.

ASSISTANT: Do you need a halt in between the journey?

USER: Yes, I need a break.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Sorry, there were no flights found on your route.

USER: It's Ok, thanks for your response.

ASSISTANT: Thank you for contacting us.