You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you at this moment?

USER: I am Andrew Martinez.

ASSISTANT: Glad to meet you Andrew Martinez.

USER: I am planning for the trip to visit the famous places in Houston, can you please search a flight ticket from Chicago?

ASSISTANT: Sure, I am happy to help you with that.

USER: Thank you.

ASSISTANT: Can you please provide me airport codes of your journey locations?

USER: The nearest airport to my current location is ORD and the landing airport is IAH.

ASSISTANT: Ok, please let me know the travel dates of your journey.

USER: The travel dates of my journey are 04/16 and 04/18.

ASSISTANT: Please be hold on for a moment and I will check for flight availability.

USER: Ok, please make sure that the connection limit is 1.

ASSISTANT: Sorry Andrew Martinez, no flight is available to you on your dates.

USER: It's ok, thank you for spending your time in searching the flight for me.

ASSISTANT: Most welcome. Thank you for choosing us, have a great day.

USER: You are welcome.