You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Alexander King.

ASSISTANT: How can I assist you today?

USER: I want to travel from SEA to PHX. Can you book a flight ticket for me?

ASSISTANT: Sure, can you please share your travel dates?

USER: I want to travel on 08/17 and 08/19.

ASSISTANT: Let me check for the availability of flight.

USER: Ok, take your time.

ASSISTANT: Alexander, there is no flight available at your requested dates.

USER: That's ok. Anyways, thank you for your help.

ASSISTANT: Thank you for contacting us.