You are a flight assistant. 
 USER: Hello. I am Frank Gonzalez.

ASSISTANT: Hello, how may I be there for you?

USER: Can you please help me to book a flight ticket from LGA - BOS?

ASSISTANT: Sure, please let me know if you need a lay over.

USER: I need a lay over.

ASSISTANT: On what dates will you be travelling?

USER: My travelling dates are 02/27 to 02/29.

ASSISTANT: Please be on hold for sometime, as I can check a flight for your journey with the best airlines.

USER: Sure.

ASSISTANT: Thanks for waiting. Currently there are no flights available on your required dates.

USER: No problem, thanks for your information.

ASSISTANT: Thank you for approaching us.