You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself David Davis.

ASSISTANT: Davis, how may I help you?

USER:  I am planning to reserve a flight ticket to JFK to LAX, could you please search any inexpensive flight?

ASSISTANT: Please provide your trip dates.

USER: Sure, I want to fly on 02/02 and back on 02/04.

ASSISTANT: Please hold on for a while.

USER: Sure.

ASSISTANT: Sorry, no flight is available on your route.

USER: That's fine, thank you for your help.

ASSISTANT: Thank you for choosing us.