You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Myself Daniel Anderson. I would like to visit Detroit this summer, so could you please book a ticket from HOU to DTW?

ASSISTANT: Sure, can I know your travel dates?

USER: My journey dates are 03/06 and return on 03/08.

ASSISTANT: Give me a minute, let me check the details?

USER: Sure.

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

USER: That's ok, no problem. Thank you.