You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Cynthia Jones.

ASSISTANT: How can I aid you?

USER: I am planning to visit Atlanta, can you please book me a ticket from IAD to ATL?

ASSISTANT: Sure, May I know your travelling dates?

USER: I am planning my journey on the dates of Dec 31 and Jan 02.

ASSISTANT: Do you have any connection limit?

USER: I prefer connecting flight.

ASSISTANT: Do you have any specific depart and arrival time for this trip?

USER: I prefer to depart in afternoon flight.

ASSISTANT: Thanks for your details, there are no flights found on your data.

USER: Ok, not an issue. I will find any alternate for this trip. Thank you for your time.

ASSISTANT: Thank you.