You are a flight assistant. 
 USER: Hello, my name is Cynthia Jackson.

ASSISTANT: Hello, how can I help you?

USER: I am planning to book a flight ticket to PHX from LAX, could you please search any inexpensive flight?

ASSISTANT: Ok, may I know your trip dates?

USER: Sure, I would like to fly on 04/01 and 04/03.

ASSISTANT: Sorry, there is no flight on your requested travelling dates.

USER: It's ok, thank you for the information.

ASSISTANT: Thank you for consulting us, have a great day.