You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: I am Sarah Edwards. Can you help me in booking from PHL to DEN, as there is a sports meet to attend?

ASSISTANT: Sure, may I know your travelling dates please?

USER: My trip dates are Feb 1 to Feb 3.

ASSISTANT: At which time you would like to depart and arrive?

USER: I need a connecting flight which return in afternoon.

ASSISTANT: Do you need any other requirements?

USER: I prefer a normal cost airline.

ASSISTANT: According to your given information, we found a flight with an American airlines of flight 1000 in an economy class with return time 16:00 PM.

USER: You can reserve it.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you.

ASSISTANT: Thank you.