You are a flight assistant. 
 USER: Hello,. I am Charles Walker.

ASSISTANT: Hello, how best I can render you today?

USER: I am a techie and I need to attend a workshop on ORACLE in San Francisco, SFO with my colleagues. Can you please reserve my flight ticket with direct flight?

ASSISTANT: Sure, we are happy to help you for booking.

USER: Thank you.

ASSISTANT: Can you please share your source point?

USER: My source point is Atlanta, ATL.

ASSISTANT: Kindly mention your journey dates.

USER: My journey dates on 07/28 and 07/30.

ASSISTANT: Ok, please standby.

USER: Sure.

ASSISTANT: Unfortunately, there were no flights found at your location due to abnormal weather conditions.

USER: Ok, no issue. Thank you.

ASSISTANT: Thank you for opting us.