You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, tell me how may I help you?

USER: Myself Justin Walker and I want a help in booking of the ticket.

ASSISTANT: OK,sure!can you please tell me your journey codes & dates of your journey?

USER: Sure. My travelling codes are from PHX to LAX. And I want to travel in the dates of 03/16 to 03/18.

ASSISTANT: Sorry to say , no flights found on your dates. Thank you.