You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Can you avail me to book a flight ticket in the month of August on 09 and 11?

ASSISTANT: Sure, can you please share your airport codes?

USER: My airport codes are DCA and CLT.

ASSISTANT: Do you require any stopovers in your journey?

USER: Yes, I prefer a stopover.

ASSISTANT:   Would you let us know if you have any other preferences?

USER: I want to return in the evening time.

ASSISTANT: Please share your name.

USER: Jason Edwards here.

ASSISTANT: Sorry to say, no flights found with your requirement.

USER: Ok, thank you.

ASSISTANT: Thanks for reaching us.