You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am planning to visit Phoenix, will you help me in booking the flight ticket from DEN to PHX?

ASSISTANT: Yes, can you tell me your dates of travel?

USER: My preferable journey dates are Mar 25 and Mar 27.

ASSISTANT: Do you have any other preferences?

USER: I need a flight with single connection in economy class.

ASSISTANT: Give me a moment.

USER: Sure, I will wait.

ASSISTANT: I have found an economy class ticket with a price of 100 and 1 connection.

USER: Sure, you can proceed with the booking.

ASSISTANT: Can I know your name for booking?

USER: Myself Justin Hernandez.

ASSISTANT: Your ticket has been booked.

USER: Thank you for helping me.

ASSISTANT: Thank you for contacting us.