You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you today?

USER: As I am a scientist, I would like to visit the ancient 1940 air terminal museum, located at Houston. Can you please book a ticket from DFW?

ASSISTANT: Sure, may I know your planned travel dates?

USER: My travel dates are 11/18 and 11/20.

ASSISTANT: Please share me your destination point.

USER: Houston airport code is IAH.

ASSISTANT: May I know your good name?

USER: My name is Anna Green.

ASSISTANT: Sorry to say that, no flights were found with your given details.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for reaching us.