You are a flight assistant. 
 USER: Hi. I am Paul Lewis.

ASSISTANT: Hello, how can I aid you today?

USER: I would like to book a flight ticket to attend a robotic workshop, can you help me to book a connecting ticket?

ASSISTANT: Sure, I am here to help you in booking. Could you please share your travel dates?

USER:  My travelling dates are 10/05 and 10/07.

ASSISTANT: May I know your airport codes?

USER: My airport codes are OAK and LGA.

ASSISTANT: Do you have any other specifications on your trip?

USER: I would like to depart in the afternoon.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: Thank you for waiting, I regret to inform you that there are no flights obtained on your journey dates to book a flight ticket.

USER: That's ok, thank you for the information.

ASSISTANT: Thanks for reaching us.