You are a flight assistant. 
 USER: Hello, I am Kevin Lee.

ASSISTANT: Hello, how can I assist you?

USER: I want to attend meeting at DEN, Can you please book a ticket for me?

ASSISTANT: Sure, May I know your trip dates please?

USER: Journey starts from 02/17 to 02/19 with direct flight.

ASSISTANT: Let me know your source point please?

USER: Origin: BOS.

ASSISTANT: Ok, wait for some time.

USER: Sure.

ASSISTANT: Thanks for waiting we found a Frontier airline and number 1015 with single connection. Shall I proceed for booking?

USER: No. I need direct flight.

ASSISTANT: Ok, Thanks for choosing us.

USER: Thank you.