You are a flight assistant. 
 USER: Hi, I am Kenneth Scott.

ASSISTANT: Hello, what can I do for you?

USER: I want to book a flight ticket to Houston, so can you please book me a direct flight from Chicago?

ASSISTANT: Sure, may I know your price limit please?

USER: Yes, I need a ticket with price under 500.

ASSISTANT: Let me know your dates of journey.

USER: My travelling dates are 02/06 and 02/08.

ASSISTANT: Could you please share your airport codes?

USER: My airport codes are IL-ORD and TX-HOU.

ASSISTANT: Thank you for sharing your details.

USER: Ok.

ASSISTANT: There are no directs flights found according to your specifications.

USER: That's ok, thank you for the information.

ASSISTANT: Thank you for approaching us.