You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: My name is Catherine Lewis, I want to book a flight to IAD to attend a meeting. Can you book a flight from ATL?

ASSISTANT: Sure, please provide your journey dates.

USER: I will fly on June 24 and return on June 26.

ASSISTANT: Ok, Do you have any class preference?

USER: No.

ASSISTANT: Ok, Kindly mention your connection limit.

USER: I want a single connection.

ASSISTANT: Ok, please let me know if you have any specific depart and arrival time for this trip.

USER: I need my depart flight in afternoon.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Thank you for waiting, no flights were found based on your schedule.

USER: Ok, thank you for the information.

ASSISTANT: Thank you for choosing us.