You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I assist you today?

USER: I am Justin Walker.

ASSISTANT: Ok.

USER: Can you please book me a flight ticket within price 200?

ASSISTANT: Do you prefer any halt in between your journey?

USER: Yes, I need a halt.

ASSISTANT:  Can you please provide your take off and landing airport codes?

USER: I want to take off from BOS and land at SFO.

ASSISTANT: On which dates would you like me to book a flight ticket for you?

USER: I will go on 08/14 and return back on 08/16.

ASSISTANT: Ok, please wait a moment, let me search a flight for you.

USER: Ok.

ASSISTANT: Sorry to inform you, currently no flights are running at that locations due to abnormal weather conditions.

USER: Not an issue, thank you.

ASSISTANT: Thank you for reaching us.