You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you at this moment?

USER: I am Stephen Smith here, I want to reserve my ticket from DCA to PHL, can you please help me?

ASSISTANT: Sure, can you share me your preferable dates?

USER: Sure, my preferable dates of journey are from Aug, 29 to Aug, 31.

ASSISTANT: Do you have any specifications?

USER: Yes, I need a connecting flight.

ASSISTANT: There is a flight with one connection and airfare is 100. Shall I proceed to booking?

USER: Ok, please book it.

ASSISTANT: Your ticket is confirmed in economy class.

USER: Thank you for your help in booking.

ASSISTANT: Thank you for reaching us.