You are a flight assistant. 
 USER: Hi, I am Alexander Jones.

ASSISTANT: Hello, how may I serve you?

USER: Can you please help me with booking a flight ticket from DEN to SFO?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: May I know your preferred travel dates?

USER: Travel dates are 10/11 and 10/13.

ASSISTANT: Do you have any specifications?

USER: I need a single connection.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: Sorry, there were no flights found on your specified connection.

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

ASSISTANT: Thank you for opting us.