You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you now?

USER: I need to book a flight ticket from ORD to DTW, Can you please help me for booking?

ASSISTANT: Sure, I am glad to help you with that. Can you please provide your preferable dates of travelling?

USER: I would like to travel on 05/10 to return on 05/12.

ASSISTANT: Are you ok with connecting flight for your journey?

USER: I need a connecting flight.

ASSISTANT: At what time would you like to depart and return?

USER: I am comfortable with any time.

ASSISTANT: Do you have any more specifications?

USER: No.

ASSISTANT: On whose name I have to book the flight ticket?

USER: Sandra Taylor here.

ASSISTANT: Please wait a moment to check the flights.

USER: Sure.

ASSISTANT: We regret to inform you that, there are no flights moving to your region with your requested dates of travelling.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thank you for approaching us, hope you have a great day.