You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you now?

USER: Can you aid me to book my ticket from DEN to HOU?

ASSISTANT: Ok, may I know your planned dates for this journey?

USER: My travel dates are Nov 5 and Nov 7 respectively.

ASSISTANT: May I know your good name please?

USER: Gary Scott here.

ASSISTANT: May I know your specifications?

USER: Make sure that connection limit is single.

ASSISTANT: Gary Scott, there is o flight currently available for your journey. Thank you for approaching us.

USER: No issue.

ASSISTANT: Have a nice day.