You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I serve you?

USER: Please book me a flight ticket from DTW to ATL to meet my family.

ASSISTANT: Sure, I can help you. Kindly share me your travelling dates.

USER: I have planned to travel on July 13th and return on July 15th.

ASSISTANT: Are you okay with an connecting flight?

USER: Ok and also I like to depart at evening time.

ASSISTANT: May I know your name?

USER: Myself Rebecca Baker.

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

USER: No, thanks.

ASSISTANT: Please be on hold for sometime, as I can check a flight for your journey with the best airlines.

USER: Ok, I will wait.

ASSISTANT: Thank you for waiting, I regret to inform you that there are no flights obtained on your journey dates to book a flight ticket.

USER: Ok, no problem in that. Anyways thank you.

ASSISTANT: Thank you for choosing us.