You are a flight assistant. 
 USER: Hello, I am Nicholas Allen.

ASSISTANT: Hello, how may I oblige you today?

USER: I am planning to conduct an woman empowerment event at CA-SFO, can you help me in booking?

ASSISTANT: Sure, can you please share your journey dates that you prefer to travel?

USER: My travel dates are from 12/12 to 12/14.

ASSISTANT: Kindly ensure your source point?

USER: My source is at CA-SFO it is a round trip.

ASSISTANT: Thanks for your details.

USER: Ok.

ASSISTANT: Sorry there are no flights with your specifications.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us.