You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Helen Williams.

ASSISTANT: How can I assist you now?

USER: On 10/20 to 10/22, I have several meetings with my clients at different locations. Can you book me a flight ticket?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: Please mention your airport codes.

USER: Ok, My boarding point is Oakland, OAK and landing at Dallas & Fort Worth, DFW.

ASSISTANT: Do you have any connection limit?

USER:  Obviously, I need a connecting flight.

ASSISTANT: You have a flight with 1 connection of price 100 in Southwest airline. With 1010 flight.

USER:  It is perfect flight for my journey, proceed for booking.

ASSISTANT: Sure, ticket is reserved.

USER:  Thanks for your assistance.

ASSISTANT: Thank you for opting us.