You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I want to travel from ATL to OAK. Can you help me to book a flight ticket?

ASSISTANT: Sure, could you please help me with your dates of journey?

USER: I want to fly in the flight on July 04 and July 06.

ASSISTANT: May I know your name please?

USER: Catherine Thompson.

ASSISTANT: Do you need any other specifications please?

USER: I want to return in evening time.

ASSISTANT: Are you expecting any other specifications please?

USER: I want to have a connection of 1.

ASSISTANT: Please wait for a moment.

USER: Ok.

ASSISTANT: Sorry Thompson, there is no flight found as per your travelling details.

USER: That's ok. Anyways, thank you.

ASSISTANT: You are welcome.