You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Helen Phillips.

ASSISTANT: How may I help you, Helen?

USER: I have a meeting to attend at Philadelphia. Can you help me in booking a ticket?

ASSISTANT: Sure, may I know your journey dates please?

USER: My travelling dates are from 10/06 to 10/08.

ASSISTANT: Please provide me your airport codes.

USER: My airport codes are from LAS to PHL.

ASSISTANT: Helen, there is a flight with price 100 and connection 1. Shall I book the ticket?

USER: Please book the ticket.

ASSISTANT: Your ticket is confirmed with flight 1004 from Delta airlines.

USER: Thank you for your response.

ASSISTANT: Thank you for choosing us.