You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Ronald Turner.

ASSISTANT: How can I  help you?

USER: Please book a flight ticket on dates 02/06 and 02/08.

ASSISTANT: Your airport codes please?

USER: My airport codes are IAD and OAK.

ASSISTANT: Do you have any specifications?

USER: I want to depart at morning.

ASSISTANT: What about connection limit?

USER: I need a connecting flight.

ASSISTANT: I am sorry no flights found on your route.

USER: That's ok. Thank you for the response.

ASSISTANT: Thank you for choosing us.