You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, How can I assist you the day?

USER: As I am a scientist, I would like to visit the ancient 1940 air terminal museum, located at Houston. Can you assist me to book a direct flight?

ASSISTANT: Sure, I am here to assist you.

USER: Thank you.

ASSISTANT: Can I know your Origin airport with code?

USER: Origin is from Washington, IAD.

ASSISTANT: Help me with the destination airport?

USER: Destination is to Houston, HOU.

ASSISTANT: Please ensure your travel dates?

USER:  I am willing to travel on 12/27 to 12/29.

ASSISTANT: May I know your name?

USER: Please book a ticket with the name of Richard White.

ASSISTANT: Thanks for the details, please wait.

USER: Sure.

ASSISTANT: We hardly tried to provide you the flight, but at this time there are no flights available for your journey.

USER: Ok, no issues. Thanks for the information.

ASSISTANT: Thank you for reaching us.