You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Frank Lopez here.

ASSISTANT: I hope you are doing good, how can I render you now?

USER: I want to visit Space Center which is located at Houston, can you please reserve my ticket within the price limit of 500?

ASSISTANT: Sure, I will help you with that. Can you please mention the departure date and return date of your journey to reach your destination?

USER: Ok, my starting date of journey will be on 06/14 and my return date of journey will be on 06/16.

ASSISTANT: Sure, can you please provide me the landing airport code of Houston?

USER: Ok, my landing airport code is at IAH.

ASSISTANT: Ok, can you please let me know from which location you want to start your journey?

USER: Sure, my starting airport code is at MCO.

ASSISTANT: Thank you for your information, please wait for a while.

USER: Sure, I will wait for your response.

ASSISTANT: Sorry Frank, there are no flights found on your requested dates.

USER: Ok, no problem.

ASSISTANT: Do you have any other plans to travel?

USER: No, right now I don't have any other plans.

ASSISTANT: Thank you for approaching us, have a nice day.

USER: Thank you for your help in reserving my ticket.

ASSISTANT: You are welcome.