You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I support you?

USER: I am Amanda Perez. I Want to book a flight ticket on 08/15 and return on 08/17, so can you help me with booking please?

ASSISTANT: Sure, we are ravish to help you.

USER: Thank you.

ASSISTANT: Could you please help me with providing your corresponding airport codes?

USER: Yes, my airport codes are CO-DEN and DC-DCA.

ASSISTANT: Do you require any stopovers in your journey?

USER: Yes, I need a connecting flight.

ASSISTANT: Ok, please give me a moment to find a right flight for you.

USER: OK.

ASSISTANT: Sorry to inform you that there is no flight available on your schedule dates.

USER: That's ok.

ASSISTANT: Thank you for contacting us.

USER: Thank you for the response.