You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Joshua Thomas here.

ASSISTANT: How can I assist you?

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

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

USER: My trip dates will be Oct 19 to Oct 21.

ASSISTANT: May I know in which class do you prefer to travel?

USER: No.

ASSISTANT: Do you have any specifications regarding departure and arrival time?

USER: My return time must be in the morning.

ASSISTANT: How many connections do you need in between your journey?

USER: I want a connected flight.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

ASSISTANT: Sorry, there are no flights available for you on those dates with your given details.

USER: That's ok, thank you.

ASSISTANT: Thank you for choosing us, have a nice day.