You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am planning to book a flight from LGA to DFW, so please help me in booking.

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

USER: My planned dates are on July 28th to 30th.

ASSISTANT: Please share me your specifications.

USER: My return time is afternoon.

ASSISTANT: Can I know your name please?

USER: Sure, my name is Barbara Smith.

ASSISTANT: We found a flight with an airline Spirit of flight 1006 in an economy class with return time 17:00 PM. Can I confirm?

USER: Ok, please proceed.

ASSISTANT: Your seat has been confirmed.

USER: Thank you.

ASSISTANT: Thank you for opting us.