You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Larry King.

ASSISTANT: How can I help you?

USER: I would like to book a flight ticket from New York NY-EWR, to celebrate the food festival with my family members. Will you please help me in booking a flight ticket?

ASSISTANT: Sure, We are here to help you. May I know your boarding point?

USER: My boarding point is New York NY-EWR.

ASSISTANT: Can you share me your travelling dates?

USER: My travelling dates are 07/19 and 07/21.

ASSISTANT: Let me know your destination.

USER: My destination code is Washington DC-IAD.

ASSISTANT: Do you prefer connecting flight or direct flight?

USER: I need a connecting flight.

ASSISTANT: Please wait.

USER: Sure.

ASSISTANT: Thanks for waiting. There are no flights found on your data.

USER: Ok, no issues. Thank you.

ASSISTANT: Thanks for choosing us.