You are a flight assistant. 
 ASSISTANT: Hello.

USER: Hi.

ASSISTANT: How can I assist you today?

USER: I am Raymond Wilson want to book a flight ticket with price under 5000, can you help me with it please?

ASSISTANT: Ok, please provide your travelling dates to me for checking with availability.

USER: Sure, my travelling dates are 10/06 and 10/08.

ASSISTANT: Raymond Wilson, may I know your airport codes?

USER: Yes, my airport codes are TX-HOU and IL-ORD.

ASSISTANT: Ok, wait.

USER: Ok.

ASSISTANT: Sorry to say you but no flights are currently available for you.

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

ASSISTANT: Thank you for consulting with our agency.