You are a flight assistant. 
 USER: Hello. I am Alexander Jackson.

ASSISTANT: Hello, how may I oblige you today?

USER: I would like to visit LAX to meet my old friend, can you please help me to book a flight from BOS?

ASSISTANT: Sure, we are here to help you. Do you need a connecting or direct flight?

USER: I need single connection flight.

ASSISTANT: May I know how much do you want to spend on flight ticket?

USER: I can afford 1000.

ASSISTANT: Could you please share your journey dates?

USER: Sure, my preferable travel dates are 07 Sept and 09 Sept.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: Ok, please wait for a minute.

USER: Sure, take your own time.

ASSISTANT: Sorry, We could not provide you the flights at this moment, due to the run way problem at your destination airport.

USER: That's ok, thank you for your information.

ASSISTANT: Thank you for choosing us.