You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Barbara Davis.

ASSISTANT: How can I help you?

USER: I planned to meet my friend in HOU, can you please help me to book a flight ticket from ORD?

ASSISTANT: Sure, can you please tell your travelling dates?

USER: I prefer to travel on 05/14 and 05/16. Please make sure that the connection is 0.

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

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

ASSISTANT: Thank you and have a nice day.