You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you out?

USER: Elizabeth Edwards here. I am a scientist, I have to meet my subordinates to discuss about our new project. Could you book my ticket?

ASSISTANT: Sure, I will help you in booking the ticket. May I know your travelling dates please?

USER: My itinerary dates are 04/06 and 04/08.

ASSISTANT: Can I know your airport codes too?

USER: My genesis and terminus airport codes are SEA and PHL.

ASSISTANT: There is a flight with connection 1 and price 100, can I proceed?

USER: I need a direct flight.

ASSISTANT: Sorry, there are no flights found.

USER: It's ok, thank you.

ASSISTANT: Thank you for reaching us.