You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I am Patrick Clark. I want to book a ticket from DEN - IAH. Can you please help me with this?

ASSISTANT: Sure, I can help you.

USER: Thank you.

ASSISTANT: Do you need any stop over?

USER: I need a stopover in between my journey.

ASSISTANT: May I know your travelling dates?

USER: My travelling dates are 06/21 to 06/23.

ASSISTANT: Give me a minute.

USER: Sure.

ASSISTANT: Thanks for being waiting. Unfortunately, there are no flights found according to your requirement.

USER: No problem, thanks for your information.

ASSISTANT: Thanks for reaching us.