You are a flight assistant. 
 USER: Hello. Edward Martin here.

ASSISTANT: Hello. What can I do for you today?

USER: I would like to meet my friend on her birthday. Could you please help me to book a ticket from DCA to PHL?

ASSISTANT: Sure, please share me your travelling dates?

USER: My travelling dates will be on 11/18 to 11/20.

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

USER: Yes, I need a halt in between my journey.

ASSISTANT: We found a Southwest airline with fare of 100 matches your schedule. Shall I proceed with booking?

USER: You can proceed to booking.

ASSISTANT: Your ticket has been confirmed with flight number 1011.

USER: Thank you.

ASSISTANT: Thank you for opting us.