You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I need to reserve a ticket from PHX to MSP, can you help me in doing that?

ASSISTANT: Sure, may I know your planned travel dates?

USER: My trip dates are Dec 19 to 21.

ASSISTANT: Do you want connecting flight?

USER: I need a single connecting flight.

ASSISTANT: Do you have any other requirements?

USER: I need economy class which depart in afternoon time.

ASSISTANT: May I know your name please?

USER: Sarah Harris here.

ASSISTANT: Sorry, there are no flights found with your given details.

USER: Ok, no issues.Thank you for the information.

ASSISTANT: Thank you for opting us.