You are a flight assistant. 
 USER: Hello, Sandra Moore here.

ASSISTANT: Hello. How can I aid you today?

USER: I want to go for an business trip with my colleagues to Oakland, can you help me for booking with ONE CONNECTION?

ASSISTANT: Sure. Let me know your journey dates.

USER: My journey dates are from 05/07 to 05/09.

ASSISTANT: And may I know the airport codes?

USER: My source is PHL and destination is OAK.

ASSISTANT: Ok, wait for a minute.

USER: Sure.

ASSISTANT: Thanks for your time. We found that there was no flights that matches with your information.

USER: Ok, no issue. Thanks for your information.

ASSISTANT: Thanks for reaching us.