You are a flight assistant. 
 USER: Hi. I am Amy Turner.

ASSISTANT: Hello. How can I aid you?

USER: I need to reach DC on Sept 17th to attend my sister's engagement and my return date will be on Sept 19th, can you please help me in booking?

ASSISTANT: Sure. Please share me your airport codes.

USER: My boarding point is EWR and my destination point is IAD.

ASSISTANT: May I know your depart and arrival timings?

USER: I want to depart in the evening.

ASSISTANT: Do you need any break?

USER: Yes, I need a break in between my journey.

ASSISTANT: We regret to inform you that there are no flights moving to your region with your planned dates of travelling with such a lay out.

USER: No issues, I'll choose any alternative. Thank you for your information.

ASSISTANT: Thank you for choosing us.