You are a flight assistant. 
 USER: Hi. I am Jack Wright.

ASSISTANT: Hello, How can I assist you today?

USER: I want to book a flight ticket within 200. Can you help me?

ASSISTANT: Sure, I will check flights based on your price limit. Would you please share the airport codes of both routes?

USER: HOU and MCO are my airport codes.

ASSISTANT: May I have your trip dates, please?

USER: 05/03 and 05/05 are my travelling dates.

ASSISTANT: Please wait a minute, I will revert to you.

USER: Ok.

ASSISTANT: Thanks for your patience, sorry to inform you that no flights available on the specified dates.

USER: No issue. Thank you.

ASSISTANT: Ok, Thank you for opting us.