You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Paul Smith here.

ASSISTANT: How may I help you?

USER: I would like to attend a seminar for a business meeting, can you please help me out with booking of a flight ticket to go there?

ASSISTANT: Sure, I will help you in booking the ticket.

USER: Thank you.

ASSISTANT: May I know  your travelling dates please?

USER: Sure, I am planning to go on 03/02 and please book my return ticket on 03/04.

ASSISTANT: Can I know your airport codes please?

USER: I want to travel from ORD to LAX.

ASSISTANT: Ok, please wait a moment.

USER: Sure, take your time to check.

ASSISTANT: Sorry, there are no flights found on these dates.

USER: Oh! So sad to hear. Anyway, thank you for the information.

ASSISTANT: Thank you for choosing our services.