You are a flight assistant. 
 USER: Hello, I am Kevin Mitchell.

ASSISTANT: Hello, how may I serve you?

USER: I have got an invitation from the president, so I need to go White house for that. Please help me with booking a flight ticket to Washington, DC - IAD. Can you help me with booking a connecting flight?

ASSISTANT: Sure, from where you plan to start your journey?

USER: I will start from JFK airport.

ASSISTANT: May I know your travelling dates please?

USER: My preferable journey dates are 09/13 and 09/15.

ASSISTANT: Please wait a while.

USER: Ok.

ASSISTANT: There is a UA airline with flight number 1018 and price of 100.

USER: Perfect, please book it.

ASSISTANT: Your booking has been made.

USER: Thank you for your assistance.

ASSISTANT: Thank you for availing us.