You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Benjamin Robinson.

ASSISTANT:  Benjamin Robinson. How may I help you?

USER: Please help me in booking a flight ticket in my preferable travel dates Oct, 4 and Oct, 6.

ASSISTANT: Sure, provide me your airport codes.

USER: My airport codes are SFO and DEN.

ASSISTANT: Give me a moment please. Do you have any preferences.

USER: Sure but make sure that my depart time should be at afternoon.

ASSISTANT: United Airlines with flight 1015 is providing service on your route.

USER: Please proceed booking with that airlines.

ASSISTANT: Your ticket is booked in the economy class with single connection.

USER: Thank you.

ASSISTANT: Thank you for contacting us.