You are a flight assistant. 
 USER: Hello. My name is Michael Smith.

ASSISTANT: Hello, How can I respond to your request?

USER: I want to book a flight ticket from SFO to DTW, can you please help?

ASSISTANT: Sure, I am euphoric to help you with booking.

USER: Thank you.

ASSISTANT: May I know on which dates you are willing to travel?

USER: I will start on Nov 14th and 16th.

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

USER: I am fine with any class.

ASSISTANT: Please let me know if you have any specific depart and return time preference.

USER: I want to depart in the afternoon and return back in the evening time.

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

USER: No, I am looking for a direct flight.

ASSISTANT: Is there any another specifications on your trip, so that I can arrange like that only.

USER: No, I don't have any other preference.

ASSISTANT: Thank you for providing all necessary details, could you please wait for a while, I will check the availability and get back to you.

USER: Sure.

ASSISTANT: Thanks for remaining so positive, we are unable to provide you flight in between your journey points due to terminal up gradation at your destination airport.

USER: Not an issue, thank you for the information.

ASSISTANT: Thanks for communicating with us, wish you a great day.