You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I render you today?

USER: I am William Gonzalez, want to travel from DFW to LGA. Can you please help me?

ASSISTANT: Sure, I would be happy to help you.

USER: Thank you.

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

USER: Yes,I want a single halt.

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

USER: My trip dates are from 02/04 to 02/06.

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: It's ok, thank you.

ASSISTANT: Thank you for reaching us.