You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Anthony Anderson here.

ASSISTANT: How may I assist you now?

USER: Please help me out in booking the ticket from BOS to LGA.

ASSISTANT: Anthony Anderson, may I know your planned dates?

USER: My trip dates will be 09/26 to 09/28.

ASSISTANT: Ok, wait.

USER: Ok.

ASSISTANT: Sorry to say, no flights are available for you.

USER: That's ok, no issues. Thank you.

ASSISTANT: Thank you for reaching us. Have a safe journey.