You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Andrew Phillips.

ASSISTANT: How may I help you today?

USER: Can you please make me reservation from DEN to CLT?

ASSISTANT: Phillips, please mention your travelling dates?

USER: Sure, my trip dates are 01/25 and 01/27.

ASSISTANT: Please wait a moment.

USER: Ok, take your own time.

ASSISTANT: Sorry, there are no flights available on your route.

USER: That's ok. Thank you for your information.

ASSISTANT: Thank you for reaching our service.