You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Can you please help me to book a flight from LAS to DEN?

ASSISTANT: Sure, can you please let me know your travelling dates?

USER: My travel dates are May 03 to 05.

ASSISTANT: Do you like to go with a connecting or direct flight?

USER: I prefer a connecting flight.

ASSISTANT: Are there any other specifications?

USER: No.

ASSISTANT:  May I know your name for the documentation process?

USER: I am Charles Carter.

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

USER: No problem, thank you for the information.

ASSISTANT: Thank you for reaching us.