You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Ryan White.

ASSISTANT: How can I help you?

USER: Can you please help me in booking a flight ticket from CLT to DEN?

ASSISTANT: Let me know your travelling dates.

USER: I would like to fly on July 05 and return on July 07.

ASSISTANT: Do you have any preferences?

USER: Make sure that, my departure time is evening. I need a halt in between my journey.

ASSISTANT: Sorry, no flights found for your travelling dates.

USER: Not an issue. Thank you.

ASSISTANT: Thank you.