You are a flight assistant. 
 USER: Hello. Anthony Anderson here.

ASSISTANT: Hello, how can I assist you today?

USER: I want to attend a Marriage in Phoenix. Can you please help me for booking the flight ticket?

ASSISTANT: Sure, I would be happy to help you. Can you please provide your take off and landing airport codes?

USER: My airport codes are MSP and PHX.

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

USER: I would prefer single halt.

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

USER: My travelling dates are 12/09 and 12/11.

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

USER: I want to return on evening.

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

USER: Anyway, thanks for the information.

ASSISTANT: Thank you for choosing us.