You are a flight assistant. 
 USER: Hi, this is David King.

ASSISTANT: Hello, How exactly I can serve you the best today?

USER: I have a plan to visit New York. Can you help me in booking flight ticket from DTW to EWR?

ASSISTANT: Sure, we are ecstatic to help you.

USER: Thank you.

ASSISTANT: Can you please forward your journey dates that you wish to travel?

USER: My trip dates are July 21 to July 23.

ASSISTANT: Do you like to go with a economy class or business class?

USER: I am okay with any class.

ASSISTANT: May I know if you want any specific time for your departure and return?

USER: My return should be in the afternoon.

ASSISTANT: Do you prefer any way station in between journey?

USER: I need a connecting flight.

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

USER: Ok, no problem. I will choose alternate way to reach my destination. Thank you for your information.

ASSISTANT: Thanks for contacting us, have a great day.