You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Debra Martinez here, I need to book a flight ticket from ORD to HOU. Can you please help me with it?

ASSISTANT: Sure, Please provide me your travel dates.

USER: My journey dates will be on 03/23 to 03/25.

ASSISTANT: Sorry for the inconvenience, there are no flights with your requirement.

USER: Not an issue, thank you.

ASSISTANT: Have a nice day.