You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Linda Moore.

ASSISTANT: How can I aid you today?

USER: Can you please book a flight ticket from IAH to DTW?

ASSISTANT: Sure, I can aid you in booking flight ticket.

USER: Sure, I need to travel on dates of 12/15 and 12/17.

ASSISTANT: Please hold on a moment, I will check flight availability in this route.

USER: Sure, take your time.

ASSISTANT: Sorry for the inconvenience no flights available in this route as per your requested dates.

USER: Oh! It is sad to hear. Anyway, thank you for your time.

ASSISTANT: Thank you for reaching us, have a nice day.

USER: Most welcome.