You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Ryan Carter. I want to book a connecting flight ticket to meet my parents. Can you help me with this?

ASSISTANT: Sure, can I know the travel dates please?

USER: Thank you. 10/14 and 10/16 are my travelling dates.

ASSISTANT: Could you please provide the airport codes?

USER: LAS and HOU are my airport codes.

ASSISTANT: May I know the departure and return time please?

USER: I would like to depart in the evening.

ASSISTANT: Do you have any requirements?

USER: I need a break.

ASSISTANT: Ok, wait a moment please.

USER: Ok.

ASSISTANT: Sorry, there are no flights available as per your request.

USER: No issue. Thank you for the information.

ASSISTANT: Thank you for approaching us.