You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Patricia Green here.

ASSISTANT: Patricia Green. How may I help you?

USER: I'm ;planning a round trip in Philadelphia, can you please book a ticket from PHL to PHL?

ASSISTANT: Sure, can you provide me with the travel dates?

USER: Sure, my planned departure and return travel dates are 12th and 14th of August.

ASSISTANT: Give me a moment please.

USER: Sure, I'll wait for your response.

ASSISTANT: UA airlines with flight 1005 is providing service on your route with single connection.

USER: That's fine,  you can proceed for booking the ticket.

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

USER: Thank you so much for your help.

ASSISTANT: Thank you for approaching us.