You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you today?

USER: I am planning to attend a Tennis competition in DTW from IAH. Can you find a flight ticket for me?

ASSISTANT: Sure, I will aid you with that. Could you please mention your preferable travel dates?

USER: Ok, my planned dates are on Dec 10 and return Dec 12.

ASSISTANT: May I know your name for further process?

USER: Yes, I am Benjamin Nelson.

ASSISTANT: Is there any additional preferences do you have?

USER: I need a single connecting flight.

ASSISTANT: Do you have any another specifications?

USER: No.

ASSISTANT: Ok, please wait a moment.

USER: Sure. ,.

ASSISTANT: Sorry, no flights are available in this route as per your requested dates.

USER: Ok, not an problem. Thank you for your help.

ASSISTANT: Thank you for reaching us.