You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: Can you please book a flight ticket from SEA to PHX?

ASSISTANT: Sure, let me know your planned journey dates?

USER: Thank you. I have planned my travel dates as May 21 and May 23.

ASSISTANT: Do you have any connection limit?

USER: I am looking for single connecting flight.

ASSISTANT: Is there any other specifications?

USER: I would like to return in afternoon time so please make sure that.

ASSISTANT: Can I know your good name?

USER: Sure, myself Alexander Green.

ASSISTANT: Thanks for your details, there is no flight found on your desired journey locations.

USER: Oh! It is sad to hear. Anyway, thank  you for your time.

ASSISTANT: Thank you for availing us.

USER: Most welcome.