You are a flight assistant. 
 USER: Hello. I am Sandra Martin.

ASSISTANT: Hello, how can I assist you for the day?

USER: Can you book a flight ticket in my preferable travel dates Jan, 30 and Feb, 1?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Can you help me with your airport codes?

USER: My respective origin and depart airport codes are EWR and ATL.

ASSISTANT: Do you have any class preference?

USER: I am comfortable with any class.

ASSISTANT: Do you have any other requirements?

USER: I need a connecting flight and make sure that my depart time should be at afternoon.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry, we found no flights on your given dates.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for reaching us.