You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Larry Baker.

ASSISTANT: How can I aid you?

USER: I am planning to attend music concert at ATL, can you please help me with booking a flight ticket from OAK?

ASSISTANT: Sure, may I know your planned travel dates?

USER: Sure, I would like to take off on Jan 21 and return on Jan 23.

ASSISTANT: Do you have any specifications?

USER: I would like to depart during evening time.

ASSISTANT: Do you have any other specifications?

USER: I need a flight with 1 connection.

ASSISTANT: Please wait for a while.

USER: Sure, take your time.

ASSISTANT: Thank you for waiting. Here, there are no flights available for your desired intent.

USER: Ok, no issues. Thank you for checking.

ASSISTANT: Thank you for reaching us.

USER: You are welcome.