You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what can I do for you now?

USER: I am Paul Rodriguez. I would like to book a flight ticket to San Francisco to meet my parents after a long time.

ASSISTANT: Ok.

USER: Could you please help me in booking a flight ticket with fare 1000?

ASSISTANT: Sure. Kindly mention your airport codes.

USER: My airport codes are from NY-EWR to CA-SFO.

ASSISTANT: Help me with your scheduled dates.

USER: My scheduled dates are 05/12 and 05/14.

ASSISTANT: Sorry, there was no flights. Thank you for reaching us.

USER: Thank you for your service.