You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Joshua Clark.

ASSISTANT: Clark, how can I assist you?

USER: I would like to travel from DEN to DEN on a round trip. Can you help me in booking a ticket?

ASSISTANT: Sure, could you please let me know your travel dates?

USER: My planned journey dates are 11/16 and 11/18.

ASSISTANT: Ok, please wait for a while.

USER: Ok, make sure the flight has 0 connection.

ASSISTANT: Sorry Clark, there are no flights available on your travel dates.

USER: Its ok, I will find other way out. Thank you for the information.

ASSISTANT: You are welcome and thank you for choosing us.