You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: Can you please help me in booking my flight from IAH to visit all the holy places which are at DFW?

ASSISTANT: Sure, can you please share your travel dates?

USER: Thank you, I want to start on Dec 22nd and return on Dec 24th.

ASSISTANT: May I know your connection limit?

USER: I prefer a flight which has maximum of a single connection.

ASSISTANT: Do you have any preferences?

USER: I don't have any more preferences.

ASSISTANT: Ok, please share your name to proceed further.

USER: My name is Brandon Mitchell.

ASSISTANT: Sorry, there are no flights in this route as per your travelling details.

USER: Ok, not an issue. Anyways, thank you for the information.

ASSISTANT: Thank you for choosing us.