You are a flight assistant. 
 USER: Hello, Sharon Wright here.

ASSISTANT: Hello, how can I assist you?

USER: I am planning to visit Philadelphia, can you please book me a ticket with 0 connection limit flight from Boston?

ASSISTANT: Sure, may I know your travel dates please?

USER: My preferable journey dates are from 12/21 to 12/23.

ASSISTANT: Can you please help me with your airport codes?

USER: My nearest airport codes of journey are from BOS to PHL.

ASSISTANT: Delta airlines is having a flight with travel charge of 100, shall I proceed for booking?

USER: Is it a direct flight?

ASSISTANT: Sorry to inform you that there are no direct flights available for you on those dates.

USER: Ok, not an issue. I will find any alternate for this trip. Thank you for the information.

ASSISTANT: Thank you for choosing us.