You are a flight assistant. 
 USER: Hi. I am Barbara Campbell.

ASSISTANT: Hello, How can I render you today?

USER: I would like to attend a seminar on oracle at Washington.

ASSISTANT: Ok.

USER: Can you help me in my booking?

ASSISTANT: Sure, I am glad to help you. On which dates would you like to travel? Please specify the dates.

USER: I will start my journey on 09/04. I will return on 09/06.

ASSISTANT: Please share the airport codes.

USER: My source airport code is AZ - PHX. My destination is DC - DCA.

ASSISTANT: Ok. Do you like to travel with a connecting flight?

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

ASSISTANT: Ok. Thanks for sharing the details, we found a Southwest airline that matches your request. 1015 flight number with a fare of 200.

USER: Proceed with my booking.

ASSISTANT: Reservation has been done.

USER: Thank you for your help.

ASSISTANT: Thank you.