You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: Can you please help me in booking a flight ticket to LAS from IAH?

ASSISTANT: Sure, may I know the planned travel dates to check for the flight availability?

USER: My travel dates are from Feb 02 to Feb 04.

ASSISTANT: May I know the connection limit for this journey?

USER: I need a direct flight.

ASSISTANT: Please provide me the name.

USER: I am Melissa Hall.

ASSISTANT: Sorry, there are no flights are available for your desired intent.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us.