You are a flight assistant. 
 USER: Hello.

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

USER: Myself Donna Collins from Phoenix. Can you please book a direct flight ticket to Phoenix?

ASSISTANT: Sure, can you please provide your nearest airport codes?

USER: I want to fly from PHX and destination airport is PHX.

ASSISTANT: May I know your planned dates of journey please?

USER: My departure date is 09/26 and please confirm my return ticket also on 09/28.

ASSISTANT: Donna Collins, there are no direct flight services available on this route on your provided dates.

USER: Oh! It's ok no problem. Thank you for your information.

ASSISTANT: Thank you for contacting us.