You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I want to attend a business meeting with my colleagues at DCA, can you help me with booking?

ASSISTANT: Sure, may I know your planned travel dates?

USER: My travel dates are Dec 08 and Dec 10.

ASSISTANT: May I know your source airport code please, for the booking process?

USER: My boarding point is JFK.

ASSISTANT: Do you have any limits on number of connections?

USER: I need a connecting flight.

ASSISTANT: Do you have any another specifications on your journey?

USER: I prefer to depart in the morning time.

ASSISTANT: Sure, may I know your name for the documentation purpose?

USER: I am Samantha Wright.

ASSISTANT: Sorry, we regret to inform you that there is no flight available as per your request.

USER: Ok, no problem. Thank you.

ASSISTANT: Welcome, thank you for reaching us.