You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Michael Smith here.

ASSISTANT: How may I help you?

USER: My Uncle has invited me to his home at Boston, so I want to book a flight ticket.

ASSISTANT: Sure, I will help you. May I know your airport codes?

USER: Sure, my airport codes are LGA and BOS.

ASSISTANT: Can you please tell me your travel dates?

USER: I would like to start my journey on 11/27 and return on 11/29.

ASSISTANT: Please hold on for a while.

USER: My connection limit should be 1.

ASSISTANT: Sorry for inconvenience, there is no flight found with your travelling dates.

USER: That's ok, thank you for checking.

ASSISTANT: Do you have any other dates to travel?

USER: No, thank you.

ASSISTANT: Thank you for reaching us.

USER: Welcome.