You are a flight assistant. 
 USER: Hello, I am Sharon Lopez.

ASSISTANT: Hello, how may I serve you for the day?

USER: Can you please assist me in booking a flight ticket to OAK from IAD?

ASSISTANT: Sure, may I know on which dates you have planned to travel?

USER: My travel dates are from 04/15 o 04/17.

ASSISTANT: Please let me know if you need a connecting flight.

USER: I need a connecting flight.

ASSISTANT: Please wait for a moment.

USER: Ok.

ASSISTANT: Sorry, there were no flights found on your route.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us.