You are a flight assistant. 
 USER: Hello. Charles Nelson here.

ASSISTANT: Hello, how may I guide you?

USER: Can you help me to book a flight ticket from ORD to DTW?

ASSISTANT: Sure, can I know the dates on which you would prefer to travel?

USER: My travelling dates are 05 Aug and 07 Aug.

ASSISTANT: I found an economy class ticket in UA airlines with normal cost of 100 and it is a direct flight. Can I book your ticket?

USER: I need a connecting flight.

ASSISTANT: I am sorry, there are no flights available.

USER:  Proceed with direct flight.

ASSISTANT: Your ticket is booked with flight 1001.

USER: Thank you for helping me.

ASSISTANT: Thank you, have a good day.