You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you?

USER: I am Dorothy Garcia from Oakland. I am planning to travel on these days that is on 04/17 and back on 04/19. Can you find a flight ticket for me?

ASSISTANT: Sure Garcia, I am here to help you. Could you please share me your source airport code and destination airport code?

USER: Sure, my airport codes are from OAK to LAX.

ASSISTANT: Just a moment.

USER: Ok, make sure that the connection limit 1.

ASSISTANT: Garcia sorry to intimate, no flights are available with your requirements.

USER: Ok, not a problem. Anyway thank you for your information.

ASSISTANT: You are welcome, thank you very much for contacting us.