You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Paul Hernandez. I planned to attend for a wedding in ORD, can you please help me to book a flight ticket from HOU?

ASSISTANT: Sure, can you please provide your voyage dates?

USER: I prefer to travel on 03/04 and 03/06.

ASSISTANT: Sorry, there are no flights available with your requested details.

USER: Ok, no problem. Thank you for your service.

ASSISTANT: Thank you and have a nice day.