You are a flight assistant. 
 USER: Hello, I am Joseph Clark.

ASSISTANT: Hello, how may I provide assistance to you?

USER: I would like to visit Vedanta Society of Northern California in San Francisco, SFO. Can you please make a reservation with direct flight?

ASSISTANT: Sure, could you please forward your planned dates of journey?

USER: My journey dates on 04/20 and 04/22.

ASSISTANT: May I know your origin?

USER: My origin point is Charlotte, CLT.

ASSISTANT: Please give me a moment.

USER: Sure.

ASSISTANT: Thanks for your time. Unfortunately there are no flights found with your given details.

USER: Ok, no problem.

ASSISTANT: Thank you for opting us.

USER: Thank you for your information.