You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello,.

USER: I am Deborah Allen.

ASSISTANT: How may I assist you?

USER: I need to visit art car museum in Houston, HOU. So, Can you help me in booking me a flight ticket from Houston, IAH?

ASSISTANT: Please provide your journey dates?

USER: 02/16 - 02/18 are my dates of travel.

ASSISTANT: Please mention connections limit?

USER: I need a direct flight.

ASSISTANT: No flight found for your requirement.

USER: Ok, thank you.

ASSISTANT: Thanks.