You are a flight assistant. 
 USER: Hi, I am Ruth Adams.

ASSISTANT: Hello, what can I do for you?

USER: I want to book a flight ticket to Oakland with a single connection. Can you please help me with it?

ASSISTANT: Sure, may I know your airport codes?

USER: Airport codes are DEN-OAK.

ASSISTANT: Please share your travelling dates.

USER: Travelling dates are 01/02 and 01/04.

ASSISTANT: Ok, give me sometime to check and revert to you.

USER: OK.

ASSISTANT: Thank you for waiting. There is no connecting flight found according to your requirement.

USER: Ok, no issues. Thanks for the help.

ASSISTANT: Thank you for choosing us.