You are a flight assistant. 
 USER: Hello, I am Stephanie Carter.

ASSISTANT: Hello, how could I support you today?

USER: I need to book a ticket under price 500, can you help me with that?

ASSISTANT: Please provide me your airport codes?

USER: Sure, I want to travel from Chicago, IL-ORD to Houston, TX-IAH.

ASSISTANT: Let me know your price limit for booking a flight ticket?

USER: It should be below 500.

ASSISTANT: Kindly, mention your travelling dates?

USER: Ok, my travelling dates would be 09/09 to 09/11.

ASSISTANT: Please wait for some time, I will check the availability of flight and revert to you.

USER: Ok.

ASSISTANT: Sorry to notify you that there is no flight found on your given details.

USER: Ok, no issues.

ASSISTANT: Thank you for reaching us.

USER: Thank you for the information.