You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Dennis Williams.

ASSISTANT: How may I help you?

USER: I am planning to visit Phoenix, can you please book me a ticket with 0 connection limit flight?

ASSISTANT: Sure, may I know your travelling dates?

USER: My preferable journey dates are from 11/21 to 11/23.

ASSISTANT: Let me know your airport codes?

USER: My nearest airport codes of travel are from SEA to PHX.

ASSISTANT: Sorry, no flight is available for you.

USER: Ok, not an issue. Thank you for providing information.

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