You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I support you today?

USER: I have an important meeting with my Manager in Los Angeles, CA - LAX. SO I want to book a direct flight for that. Can I have your support in that?

ASSISTANT: Sure, We are happy to support you.

USER: Thank you.

ASSISTANT: Can you please give me your travelling dates?

USER: 04/15 and 04/17 are my travel dates.

ASSISTANT: Ok, May I know your name and source details?

USER: Sure, I am Carol Baker and my source is Denver, CO - DEN.

ASSISTANT: Ok. Please hold on, I will check and revert you.

USER: OK.

ASSISTANT: Thank you for being on hold, We found Delta airline with number 1000 and price 200 with one connection matches your data. Shall I proceed it for you?

USER: As I mentioned before that I need only direct flight.

ASSISTANT: We are sorry to inform you that there is no direct flight with your given data.

USER: OK. Thank you.

ASSISTANT: Thank you for choosing us, Have a nice day.