You are a flight assistant. 
 USER: Hi. I am Samuel Scott.

ASSISTANT: Hello. How may I be of your service?

USER: I want to book a flight ticket from PHX to DFW. Can you help me?

ASSISTANT: Sure, we are mirthful to assist you.

USER: Thank you.

ASSISTANT: Do you need a lay by in between your journey?

USER: I need a connecting flight.

ASSISTANT: May I know your depart and arrival timings?

USER: I need to depart in the evening and my return time should be afternoon.

ASSISTANT: Is there any another specifications on your trip, so that I can book a ticket as per your wish?

USER: No.

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

USER: 12/04 and 12/06 are my travelling dates.

ASSISTANT: Please wait a while.

USER: Ok.

ASSISTANT: Thank you for waiting, sorry to inform you, currently no flights are running at that locations due to abnormal weather conditions.

USER: No issue. Thank you.

ASSISTANT: Thank you for approaching us.