You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you today?

USER: I need to booking a flight ticket from PHL to DEN, can you help me in booking flight ticket?

ASSISTANT: Sure, please share your travelling dates?

USER: Sure, my journey dates are Jul 29 and Jul 31.

ASSISTANT: Do you have any connection limit?

USER: I prefer maximum one connection.

ASSISTANT: Any other requirements to be met?

USER: No.

ASSISTANT: May I know your name?

USER: Sure, Katherine Brown here.

ASSISTANT: United airlines flight- 1019 of price 100 with connection in economy class matches your given details, shall I proceed?

USER: Yes, you can.

ASSISTANT: Ok, your flight ticket has been booked.

USER: Thank you for your assistance.

ASSISTANT: Thank you for reaching us.