You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: I am Carol Thompson here, I want to reserve my ticket from PHX to LAS, can you please help me out?

ASSISTANT: Sure, I am here to help. Please share depart and return dates to proceed further.

USER: Thank you. Sure, my planned dates of journey are from Nov, 08 to Nov, 10.

ASSISTANT: May I know which depart and return times do you prefer?

USER: Sure, my return time will be at afternoon.

ASSISTANT: Which class do you prefer to travel?

USER: No, I need a direct flight.

ASSISTANT: Sure, please wait for a while.

USER: Ok, I will wait.

ASSISTANT: Sorry to inform you that there is no flight available on given dates from you.

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

ASSISTANT: Thank you.