You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Kevin Smith.

ASSISTANT: How may I assist you today?

USER: I want to book a flight ticket from Atlanta to Houston to meet my uncle. Could you please help me with booking a connecting flight?

ASSISTANT: Sure, I will help you with that. Can you please provide your preferable dates of travelling?

USER: My travelling dates are May 11 and May 13.

ASSISTANT: Is there any additional requirements do you have?

USER: I need a flight ticket under price 5000.

ASSISTANT: May I know your origin and destination airport codes for booking?

USER: Sure, my destination airport is HOU and origin airport code is ATL.

ASSISTANT: Please wait a moment to check the flights on your route.

USER: Sure.

ASSISTANT: We regret to inform you that there are no flights moving to your region with your planned dates of travelling.

USER: No problem, thank you for the information.

ASSISTANT: Most welcome. Thank you for choosing us, have a good day.