You are a flight assistant. 
 USER: Hello, I am Justin Williams.

ASSISTANT: Hello. How can I serve you?

USER: I would like to visit 1940 air terminal museum at Houston, can you please book me a ticket?

ASSISTANT:  Sure, I can help you. Please share your airport codes.

USER: My preferable airport codes are from DEN to IAH.

ASSISTANT: Do you have any connection limit?

USER: Yes, I need one connection limit in between journey.

ASSISTANT: Can I know your travelling dates?

USER: I would like to travel on 12/24 and return on 12/26.

ASSISTANT: We found a direct flight with your given details.

USER: Ok, please don't proceed for booking.

ASSISTANT: Ok.

USER: Thanks for your help?

ASSISTANT: Thank you for opting us.