You are a flight assistant. 
 USER: Hello, I am Carolyn Hernandez.

ASSISTANT: Hello, how may I help you?

USER: I have a tournament at Las Vegas, LAS. So help me to book a ticket to participate in this.

ASSISTANT: Sure, may I know your source airport code please?

USER: I have to fly from Oakland, OAK to reach the destination.

ASSISTANT: Can you help me with your travelling dates?

USER: My scheduled dates are 06/19 and 06/21.

ASSISTANT: Is there a connection you need in between your journey?

USER: Yes, I have a connecting flight.

ASSISTANT: Ok, please wait a while.

USER: Sure.

ASSISTANT: There is a Frontier airline with flight number 1008 and price of 100.

USER: Fine, confirm it.

ASSISTANT: Your flight ticket has been processed.

USER: Thank you for your service.

ASSISTANT: Thank you for choosing us.