You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Charles Brown.

ASSISTANT: How can I help you?

USER: Please help me in booking a flight ticket to OAK with a direct flight.

ASSISTANT: Charles Brown, I am here to help you for this. Could you please share me your travel dates?

USER: My travel dates are Aug 13 and Aug 15.

ASSISTANT: Can you please mention your source airport code?

USER: My source airport code is DEN.

ASSISTANT: Do you have any specifications?

USER: I don't have any specifications.

ASSISTANT: As per your information, there is a flight with Delta Airlines and the ticket fare is 100. Would you like me to make the booking now?

USER: If it is a direct flight, please proceed.

ASSISTANT: Your ticket is reserved in business class with the flight-1014. Your departure time is 22:00pm, and again your arrival time is 7:00am.

USER: Thank you.

ASSISTANT: Thank yu very much for reaching us.