You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Dennis Nelson.

ASSISTANT: How can I  help you?

USER: I am planning to visit Philadelphia to meet my friend, can you please book me a ticket from DEN to PHL?

ASSISTANT: Your travelling dates please?

USER: My preferable journey dates are from 07/16 to 07/18.

ASSISTANT: UA airlines is providing service on this route with a ticket fare of 100, shall I book your ticket?

USER: Please book my ticket.

ASSISTANT: Your ticket is booked with flight number 1001.

USER: Thank you for booking my ticket.

ASSISTANT: Thank you.