You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Jack Lewis here.

ASSISTANT: How can I serve you today?

USER: I am a stand up comedian, I have to host a show at New York. Could you book my ticket from Washington DC?

ASSISTANT: Please share your travelling dates.

USER: My itinerary dates are Aug 21 and Aug 23.

ASSISTANT: May I know your airport codes?

USER: My genesis and terminus airport codes are IAD and LGA.

ASSISTANT: Can you share your depart and arrival time?

USER: I want to depart and return in the afternoon.

ASSISTANT: Do you need any other specifications?

USER: I need a connecting flight.

ASSISTANT: Sorry, no available flights found on your requested dates.

USER: No problem, thank you.

ASSISTANT: Thank you for choosing us.