You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I guide you?

USER: My name is Rachel Clark. I am planning to visit DTW with my friends, could you please help me in booking a ticket from HOU?

ASSISTANT: Sure, may I know your preferable dates?

USER: My planning dates are 02/17 and 02/19.

ASSISTANT: Sorry, there are no flights available on your requested locations.

USER: That's ok. Thank you for the information.

ASSISTANT: Thank you, have a nice day.