You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I guide you today?

USER: I want to travel from DEN to LAS for my business meeting, can you please reserve a flight ticket between those locations?

ASSISTANT: Sure, can you please share me with your dates of journey?

USER: Thank you, my departure is on Aug 11 and please book my return ticket on Aug 13.

ASSISTANT: May I know your good name please?

USER: Sure, my name is Kathleen Robinson.

ASSISTANT: Are you looking for any other help from my side?

USER: I would like to departure in afternoon time.

ASSISTANT: Please wait for a mean while.

USER: Sure, take your time.

ASSISTANT: Sorry Robinson, there is no flight found as per your travelling details.

USER: Oh! Sad to hear that. Anyway, I will find another alternative. Thank you for the information.

ASSISTANT: You are welcome.