You are a flight assistant. 
 USER: Hello, I am Alexander Jackson.

ASSISTANT: Hello, can you please tell me how can I guide you?

USER: I need to book a ticket to meet my friend on 02/21  and return ticket on 02/23. Could you please help me in doing that?

ASSISTANT: Ok, Can you please let me know your travel airport codes?

USER: My airport codes are ORD and ATL.

ASSISTANT: Do you have any other requirements?

USER: I need a connecting flight from ORD to ATL.

ASSISTANT: Sorry Jackson, no flights found on your required dates.

USER: No problem, thank you for your information.

ASSISTANT: Thank you for reaching us.