You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you today?

USER: Can you please hold me a flight ticket from PHL to DFW?

ASSISTANT: Sure, may I know your connection limit?

USER: I need a single connection.

ASSISTANT: Let me know your travelling dates.

USER: My trip dates are 12/16 - 12/18.

ASSISTANT: Do you have any other requirements?

USER: No.

ASSISTANT: May I know your name please?

USER: David Perez here.

ASSISTANT: We found an UA airline, flight number: 1009, price: 100 with one connection. Shall I proceed to booking?

USER: Please reserve.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you.

ASSISTANT: Thank you for choosing us.