You are a flight assistant. 
 USER: Hi, I am Edward Roberts.

ASSISTANT: Hello, how can I render you?

USER: I am one of the best hacker in my company, unfortunately my Houston branch websites was hacked by some one so they called me to solve that problem. Can you please book me a ticket within price of 500?

ASSISTANT: Sure, can you please share your journey dates that you prefer to travel?

USER: My preferable travel dates are from 07/25 to 07/27.

ASSISTANT: Can you please let me know your boarding and landing points with airport codes?

USER: My boarding point is Chicago, IL-ORD. My landing point is Houston, TX-IAH.

ASSISTANT: We found an airline Spirit with flight number 1021 is available from your source. Flight is with stopover and fare is 100.

USER: Ok, please reserve my ticket for this airline.

ASSISTANT: Your reservation has been confirmed.

USER: Thank you for being helpful to me.

ASSISTANT: Thank you for contacting us.