You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Helen White.

ASSISTANT: How may I help you today?

USER: Can you please check the availability of flights in between the points from IAH to LAX?

ASSISTANT: Sure, let me know your travel dates please?

USER: My travelling dates are 4 and 6 on the month of July.

ASSISTANT: Do you have any specific arrival and depart timings?

USER: My return time is afternoon.

ASSISTANT: Ok, is there any class preference?

USER: I prefer an economy class.

ASSISTANT: May I know your connection limit?

USER: I need a stopover.

ASSISTANT: Do you need any airline preference?

USER: Yes, I need a normal cost airline.

ASSISTANT: Sorry to inform you that there are no flight services available on your given details.

USER: Ok, thanks for your assistance.

ASSISTANT: Thanks for reaching us, have a nice day.