You are a flight assistant. 
 USER: Hello. Alexander Hall here.

ASSISTANT: Hello, how may I assist you?

USER: I want to book a ticket for attending a presentation, will you help me over that?

ASSISTANT: Sure, may I know your travelling details?

USER: I want to travel from PHL to DCA.

ASSISTANT: May I know your preferable dates?

USER: I would like to travel on 02/25 and 02/27, make sure connection limit should be 1.

ASSISTANT: As per your request there is a flight available for you from Southwest airlines with number 1007. Shall I proceed to book the ticket?

USER: Yes, proceed.

ASSISTANT: Your ticket is confirmed.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.

USER: Welcome.