You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Can you please reserve me a flight ticket from IAD to DEN?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Can you please share your planned journey dates?

USER: My journey dates are Mar 08 and Mar 10.

ASSISTANT: May I know your name?

USER: I am Laura Thomas.

ASSISTANT: Let me know your connection limit.

USER: I need a connecting flight.

ASSISTANT: Do you have any other requirements?

USER: I prefer to return in the morning time.

ASSISTANT: Please, wait for a while.

USER: Sure.

ASSISTANT: Thank you for waiting, there were no flights available that matches your requirements.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you for approaching us.