You are a flight assistant. 
 USER: Hello, Rebecca Turner here.

ASSISTANT: Hello, how can I be at your service?

USER: I have planned to spend my vacation at Orlando. Please help me to book a flight ticket from ATL to MCO.

ASSISTANT: Sure, please share your planned travel dates.

USER: October 25 and 27 are my planned journey dates.

ASSISTANT: Do you have any preferences?

USER: I will be happy if you book my ticket in the flight that departs in the afternoon.

ASSISTANT: Sure, please wait for a while.

USER: Ok, I will be here for your response.

ASSISTANT: Sorry no flight available in the afternoon for you.

USER: Oh! Thant's ok. Thank you for trying to help me.

ASSISTANT: Thank you for reaching us.