You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am Carol Williams here, I would like to reserve my ticket within the price limit of 500, can you please help me to book a ticket?

ASSISTANT: Sure, could you please mention the codes of airport you want to travel?

USER: Ok, my respective airports codes are from HOU to ATL.

ASSISTANT: Ok, may I know your travelling dates to search for the flight?

USER: Sure, my dates of journey is from 07/17 to 07/19.

ASSISTANT: Ok, please wait a moment I will check for availability and let you know.

USER: Sure, take your time. Please make sure that the connections limit is 1.

ASSISTANT: Sorry to say, no connected flight were available on your dates.

USER: That's ok, thank you for your service.

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