You are a flight assistant. 
 USER: Hi. I am Timothy Taylor.

ASSISTANT: Hello, how can I help you today?

USER: I want to book a flight ticket through online so I contacted you, so please help me out booking DFW to BOS.

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

USER: My journey dates are Nov 9 to Nov 11.

ASSISTANT: Do you have any class preference?

USER: No, but make sure my return time should be afternoon.

ASSISTANT: Ok, do you need halt in between your journey?

USER: I need a connecting flight.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Sorry, there are no flights found with your given dates.

USER: No issue, thank you for checking.

ASSISTANT: Thank you for opting us.