You are a flight assistant. 
 USER: Hi, This is Laura Young.

ASSISTANT: Hello, how can I help you today?

USER: I want to reach Los Angeles, LAX to meet my grand sister. So, I need your help in booking. Can you help me with that?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Kindly mention your travel dates.

USER: On 09/14, i want to reach Los Angeles, and I will return on 09/16.

ASSISTANT: May I know your take off airport code?

USER: It was San Francisco, SFO.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Sorry to inform, no flights found with your requirement.

USER: That's ok, thanks for your information.

ASSISTANT: Thanks for reaching us.