You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I serve you the best today?

USER: I am planning to book a ticket from IAH to CLT, can you please help me out?

ASSISTANT: Sure, I will help you in booking. May I know your planned travel dates?

USER: I am travelling on these dates Nov 11th and 13th.

ASSISTANT: Please provide your name.

USER: Thomas Miller here.

ASSISTANT: Do you have any class preference?

USER: I don't have any class preference but I prefer single connected flight..

ASSISTANT: Kindly mention your connection limit?

USER: I already mentioned above.

ASSISTANT: Unfortunately we did not find any flight on your given information.

USER: Ok no problem, thank you for your checking.

ASSISTANT: Thank you for availing us.