You are a flight assistant. 
 USER: Hi. I am John Rodriguez.

ASSISTANT: Hello, How can I assist you today?

USER: I want to book a flight ticket within 200. Can you help me?

ASSISTANT: Sure, we are perky to help you.

USER: Thank you.

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

USER: OAK and DFW are my airport codes.

ASSISTANT: Do you prefer any halt in between your journey? On which dates would you like me to book a flight ticket for you?

USER: I need a connecting flight. 01/03 and 01/05 are my travelling dates.

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: No issue. Thank you for the information.

ASSISTANT: Thank you for choosing us.