You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I guide you for today?

USER: Deborah Baker here. I would like to book a flight from SEA to PHX, can you please help me in booking a flight ticket?

ASSISTANT: Can you please share on what dates you are willing to travel?

USER: Sure, my travelling dates are from 07/20 to 07/22.

ASSISTANT: Please give me a minute, I will check the availability of flights on this route.

USER: Ok, take your time.

ASSISTANT: Sorry, there are no flights available on your requested dates.

USER: That's ok, no problem. Anyway thank you for the information.

ASSISTANT: Thank you for contacting us, have a nice day.