You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Justin Robinson.

ASSISTANT: Justin, how can I assist you?

USER: I have planned to travel to Phoenix in the holidays, can you please reserve my a flight ticket from Seattle.

ASSISTANT: Please mention your travel dates.

USER: Thank you. My planned travel dates are 10/25 and 10/27.

ASSISTANT: Ok, please tell me your airport codes.

USER: The source and destination airport codes are SEA and PHX.

ASSISTANT: Please wait for a moment.

USER: Ok, take your own time and provide me a best flight.

ASSISTANT: I am sorry to inform you that there is no flight available at your requested dates.

USER: It's ok, not a problem with that one. I will contact some other travel agency to book the ticket.

ASSISTANT: Thank you for reaching us.

USER: Anyways thank you for searching the flight.