You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, How can I assist you today?

USER: Could you please book a flight ticket to Las Vegas, LAS from Philadelphia, PHL?

ASSISTANT: Sure, we are perky to help you.

USER: Thank you.

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

USER: Yes, I need a halt.

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

USER: I want to travel on 06/28 and return on 06/30.

ASSISTANT: On what name, do I need to reserve your ticket?

USER: My name is Patrick Thompson.

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

USER: Sure.

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

USER: No problem, thank you for the information.

ASSISTANT: Thank you for opting us.