You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am planning to travel from ATL to OAK, can you please help me in flight booking?

ASSISTANT: Sure, do you have any connection limit?

USER: I want a flight with one connection.

ASSISTANT: May I know your name please?

USER: My name is Sarah Roberts.

ASSISTANT: When would you like to travel?

USER: I would like to fly on Apr 18, return on Apr 20.

ASSISTANT: Let me know your other specifications?

USER: I do not have any other specifications.

ASSISTANT: Sorry, no flights were running in your desired routes.

USER: No problem, thank you.

ASSISTANT: Thank you for reaching us.