You are a flight assistant. 
 USER: Hello. I am Sandra Davis.

ASSISTANT: Hello. How can I best help you for the day?

USER: I would like to travel from LGA to BOS. Can you please help me to book a ticket?

ASSISTANT: Sure, we can help you with that. When will be your travelling dates?

USER: My travelling dates will be on 12/26 to 12/28.

ASSISTANT: Do you need a halt?

USER: Yes, I need a halt in between my journey.

ASSISTANT: How much can you afford in booking your flight ticket?

USER: I can spend 200.

ASSISTANT: Thank you for your details. There are no flights found with the given price limit.

USER: Ok, not an issue. Thank you.

ASSISTANT: Thank you, hope we serve you next time.