You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I'm Deborah King, and my planning to travel from Houston, TX-HOU to Detroit, MI-DTW to attend my cousin's marriage.

ASSISTANT: Ok, may I know your travel dates?

USER: Can you please help me to book a ticket? Sure, my dates of travel is from 11/14 to 11/16.

ASSISTANT: Sorry to say, there is no flights available on your provided details.

USER: It sounds bad for me. Thank you, for your kind information.

ASSISTANT: Ok, thank you for approaching us.