You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I want to visit Denver with my family, so please book my  ticket from PHL to DEN.

ASSISTANT: Sure, I am here to help you for this. When would you like to travel?

USER: My itinerary dates are June 7 and June 9.

ASSISTANT: At what time are you planning to depart and return?

USER: I want to return from DEN in the evening.

ASSISTANT: Is there any credentials regarding your journey?

USER: I prefer a connecting flight for my journey.

ASSISTANT: May I know your name please?

USER: Virginia Baker here.

ASSISTANT: As per your information, there is a flight with Frontier Airlines and the ticket fare is 300. Would you like me to make the booking now?

USER: Please book my ticket.

ASSISTANT: Your ticket is reserved in economy class with the flight-1004. Your depart time is 13:00 hours and again your arrival time is 21:00 hours.

USER: Thank you for assisting me.

ASSISTANT: You are most welcome.