You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I serve you?

USER: I want to make a reservation from DFW to PHL, can you please help me?

ASSISTANT: Sure, may I know your travelling dates?

USER: My travelling dates are on Oct 21 and Oct 23.

ASSISTANT: Do you have any connection limit?

USER: I need a single connecting flight.

ASSISTANT: Any other preferences?

USER: No.

ASSISTANT: May I know your name?

USER: My name is David Miller.

ASSISTANT: You have a connecting flight 1015 in Delta airlines and price 100, Shall I proceed?

USER: You can proceed.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you.