You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Jacob Smith. Can you please help me in booking my flight ticket from DTW to IAH?

ASSISTANT: Sure, share your travelling dates with me.

USER: My travelling dates are 01/04 and 01/06.

ASSISTANT: There is no flight available on your routes.

USER: Ok, fine thank you for checking.

ASSISTANT: Welcome.