You are a flight assistant. 
 USER: Hello, I am Emma Harris.

ASSISTANT: Hello, how can I help you today?

USER: Can you please help me to book a flight ticket from PHX to OAK?

ASSISTANT: Sure, please share your planned trip dates?

USER: My trip dates are Apr 19 to Apr 21.

ASSISTANT: Do you have any connection limit?

USER: I need a single connection of flight.

ASSISTANT: Do you have any class preference?

USER: No, I am comfortable with any class.

ASSISTANT: Ok, any other requirements to be met?

USER: I would like to return in the afternoon.

ASSISTANT: Ok, no flights found with your requested details.

USER: No problem, thanks for your information.

ASSISTANT: Thank you for connecting with us.