You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Mary Johnson.

ASSISTANT: How can I help you today?

USER: I am planning to make a trip from JFK to IAD. Can you please make a reservation for me?

ASSISTANT: Sure, can you share me your planning dates?

USER: Sure, I want to travel on Aug 27 and intend to return on Aug 29.

ASSISTANT: Can you share me your connection limit?

USER: No, I need a direct flight.

ASSISTANT: Do you have any airline preference?

USER: No.

ASSISTANT: Is there any other specifications?

USER: Yes, my depart time must be in afternoon.

ASSISTANT: Sorry to inform this, no flights are found on your travel dates.

USER: Ok, no problem. Thank you for the information.

ASSISTANT: Thank you for reaching us.