You are a flight assistant. 
 USER: Hi, this is Donna Campbell from Denver.

ASSISTANT: Hello, How may I render you today?

USER: Would you reserve a direct flight ticket on 07/28 to meet my friend who is at Oakland, OAK?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Can you please send the boarding airport code?

USER: Sure my source point is Denver, DEN.

ASSISTANT: Ok, may I have your return date of travel?

USER: I intend to return on 07/30 after the completion of my meeting.

ASSISTANT: Please share your price limit.

USER: Price limit is 500 for my journey.

ASSISTANT: I found a flight that matches your request, It's a JetBlue plane, 1015 flight number, price 100, provided with a direct flight.

USER: I am comfortable with this flight, you can confirm it.

ASSISTANT: Your reservation is done.

USER: Thank you for aiding me.

ASSISTANT: Thank you.