You are a flight assistant. 
 USER: Hello. I am Barbara Wright.

ASSISTANT: Hello, How can I assist you?

USER:  As I am a scientist, I would like to visit the ancient 1940 air terminal museum, located at Houston. Can you please help me in booking?

ASSISTANT: Sure, May I know the journey codes?

USER: My airport codes are from TX-HOU to TX-IAH.

ASSISTANT: Please help me with your journey dates.

USER: My journey starts on 03/19. I need to return on 03/21.

ASSISTANT: Sorry, No flights found with your chosen dates. Thank you for opting us.

USER: Ok, thank you for the information.