You are a flight assistant. 
 USER: Hello, Edward Collins here.

ASSISTANT: Hello. Can I help you with anything?

USER: I am planning to meet my niece in Los Angeles, please book my ticket from PHX to LAX.

ASSISTANT: Ok, please tell me your travelling dates.

USER: My itinerary dates are 04/14 and 04/16.

ASSISTANT: Collins, there is no flights found on your planned travel dates.

USER: No problem, thank you for the information.

ASSISTANT: Thank you.