You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you at this moment?

USER: I am Lisa Collins here, I want to reserve my ticket from CLT to ATL, can you please help me?

ASSISTANT: Sure, I will help you with that. Can you please mention your preferable travel dates?

USER: Sure, my planned dates of journey are from Dec, 24 to Dec, 26.

ASSISTANT: Do you have any preferences regarding timings of your journey?

USER: Yes, I need a return time at morning.

ASSISTANT: Are you ok with connecting flight or you need a direct flight?

USER: I need a connecting flight.

ASSISTANT: Ok, please wait a moment.

USER: Sure, I will wait.

ASSISTANT: Sorry, no flights are available in this route as per your requested dates.

USER: Ok, not an issue. Thank you for your service.

ASSISTANT: Thank you for reaching us.