You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you?

USER: I am Karen Garcia. I am planning to travel from CLT to OAK help me in booking a flight?

ASSISTANT: Sure, may I know your planned travel dates to check for the flight availability?

USER: My travelling dates are Mar 20 to Mar 22.

ASSISTANT: Do you have any specifications?

USER: I need 1 connection flight.

ASSISTANT: Sorry to inform you, there are no flights for your desired connection.

USER: That's ok, thank you for your information.

ASSISTANT: Thank you for reaching us.