You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Janet Jones.

ASSISTANT: How can I aid you?

USER: I need to book a ticket to meet my friend on 08/26. Could you please help me in booking a return ticket on 08/28?

ASSISTANT: Sure. Please share me your airport codes.

USER: My airport codes are IAD and JFK.

ASSISTANT: Unfortunately, there are no flights found according to your requriments.

USER: No problem, thank you for your information.

ASSISTANT: Thank you.