You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I want to meet my friend on his birthday, can you please help me to book my flight ticket from PHL to DEN?

ASSISTANT: Sure, give me your itinerary dates.

USER: Sure, I would like to depart on Aug 15th and also please book my return ticket on Aug 17th.

ASSISTANT: Please give me a moment.

USER: Sure.

ASSISTANT: Hawaiian airlines with flight 1000 is operating on your route.

USER: Sounds good, you can proceed for booking the ticket.

ASSISTANT: Can you provide me your name please.

USER: Please book the ticket in the name of Jonathan Hall.

ASSISTANT: Your ticket is booked in the economy class with the cost of 100.

USER: Thank you very much for your help.

ASSISTANT: Thank you contacting us.