You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you for the day?

USER: Can you please help me with booking a flight ticket from LAX to BOS?

ASSISTANT: Sure, may I know your preferred dates of travel?

USER: Travel dates are July 04 and 06.

ASSISTANT: Do you have any airline preference?

USER: I am comfortable to travel in any airline.

ASSISTANT: Any other specifications to be met?

USER: I need a connecting flight.

ASSISTANT: May I know your name?

USER: My name is Jeffery Lee.

ASSISTANT: Please wait a minute, I will search a best flight for you.

USER: Ok.

ASSISTANT: Sorry, there were no flights found on your preferred dates.

USER: That's ok. Thank you.

ASSISTANT: Thank you for opting us.