You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I am Anthony King here. I want to travel from DCA to LAX. Can you please help me with booking a flight ticket?

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

USER: My journey dates are from Apr 18 to Apr 20.

ASSISTANT: May I know your depart time and arrival time?

USER: My depart time is evening and my return time is morning.

ASSISTANT: Do you need any flag stop in your journey?

USER: Yes, I need one stopover in between my journey.

ASSISTANT: Do you have any other requirements?

USER: No, I din't have any other requirements.

ASSISTANT: Sorry to inform you that, there are no flights found with your requirements.

USER: Not an issue, anyway thank you for the information.

ASSISTANT: Thank you for reaching us.

USER: Thank you for your service.