You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you today?

USER: Can you check the availability of flights to Los Angeles?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: May I know your travel dates please?

USER: My travel dates are Jan 25 and 27.

ASSISTANT: Ok, can you please provide your airport codes?

USER: My airport codes are BOS to LAX.

ASSISTANT: Ok, do you have any specifications?

USER: I need a connecting flight.

ASSISTANT: Ok, hold on for a moment. Let me check the best available flight for you.

USER: Sure, I will wait for your response.

ASSISTANT: May I know your name please?

USER: Stephanie Hill.

ASSISTANT: Sorry Stephanie Hill, there are no flights available on your requested dates.

USER: Ok, thank you.

ASSISTANT: Welcome, thank you for choosing us. Have a great day.