You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Can you help me to book a flight ticket from PHL to DEN?

ASSISTANT: Please provide your travelling dates.

USER: Aug, 25 and Aug, 27 are my travel dates.

ASSISTANT: Do you have any specification?

USER: I would prefer single connection.

ASSISTANT: Can I know your name?

USER: George Turner here.

ASSISTANT: Found ticket with Southwest airlines for price 100 having flight number 1005.

USER: Yes, please book.

ASSISTANT: Ticket is booked. Thank you.