You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Myself Barbara Young. I have to go Phoenix for attending a birthday party there, can you please book a flight ticket from Seattle?

ASSISTANT: Ok, please provide your airport codes.

USER: I want to take off from SEA airport and destination airport is PHX.

ASSISTANT: May I know your journey dates please?

USER: My departure date is 10/23 and please book my return ticket also on 10/25.

ASSISTANT: Please hold on a moment.

USER: Ok.

ASSISTANT: Young, no flights has been found on your dates of journey.

USER: It's ok no problem, I will go with another airline. Thank you for your information.

ASSISTANT: Thank you for choosing us.