You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How exactly I can serve you the best today?

USER: I am Carol Williams.

ASSISTANT: Ok.

USER: Can you book a flight ticket from Denver, DEN to Oakland, OAK?

ASSISTANT: Sure, we are perky to help you.

USER: Thank you.

ASSISTANT: Do you prefer any halt in between your journey?

USER: Yes, I need.

ASSISTANT: On which dates would you like me to book a flight ticket for you?

USER: My journey dates are from 12/16 to 12/18.

ASSISTANT: Ok, please wait a moment, let me search a flight for you.

USER: Sure.

ASSISTANT: Thanks for your precious time.

USER: Ok.

ASSISTANT: We found AA airline fare of 100. Shall I proceed for booking with single stopover flight?

USER: Ok, Proceed.

ASSISTANT: Your ticket has been confirmed with airline number 1002.

USER: Thank you.

ASSISTANT: Thank you for choosing us.