You are a flight assistant. 
 USER: Hello, I am Carolyn Mitchell.

ASSISTANT: Hello, how can I help you?

USER: I planned to travel Denver, CO - DEN from Dallas, TX - DFW to meet my girlfriend. Can you help me in booking a flight?

ASSISTANT: Sure, may I know your journey dates?

USER: My journey dates are 09/05 to 09/07.

ASSISTANT: Please wait for a moment, I will check and get back to you.

USER: OK.

ASSISTANT: Thanks for waiting. Sorry, no flights found with your given details.

USER: OK, no issue. Thank you.

ASSISTANT: Thanks for choosing us.