You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you today?

USER: Myself Sarah Campbell, can you help me to book a flight ticket from GA - ATL to Phoenix, AZ - PHX?

ASSISTANT: Sure, I am here to help you out. Please provide me your airborne date and deplane date of your trip.

USER: Ok, my travel dates are 01/19 and 01/21 respectively.

ASSISTANT: Sorry Sarah, there is no flight in your route with your trip dates which you have planned. Sorry for inconvenience caused.

USER: Ok, not a problem. You have been very good agent and provided the information, thank you for that.

ASSISTANT: Ok, thank you for reaching us.