You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: I am planning to visit Oakland, OAK with my friends. Can you help me to book a ticket from Denver, DEN?

ASSISTANT: Sure, when are you willing to travel?

USER: My trip dates are 11/21 and 11/23.

ASSISTANT: In whose name you want this reservation?

USER: Dennis Gonzalez here.

ASSISTANT: Please wait.

USER: Ok.

ASSISTANT: We have a JetBlue airline flight number 1018 with single halt and the cost is 200. Shall I proceed?

USER: Go ahead.

ASSISTANT: You seat has been booked. Have fun with your friends.

USER: Thank you.

ASSISTANT: Thanks for opting us.