You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I guide you?

USER: I am planning to visit my grand mother's house at Phoenix, can you please book me a ticket from DFW to PHX?

ASSISTANT: Sure, may I know your travelling dates?

USER: My preferable journey dates are from 04/02 to 04/04.

ASSISTANT: Give me a minute.

USER: Sure, take your own time.

ASSISTANT: May I know your name?

USER: My name is Lisa Mitchell.

ASSISTANT: There is a flight with number 1004 in airline UA. Can I book it?

USER: Sure, please book my ticket with this flight.

ASSISTANT: Your ticket is booked, happy journey.

USER: Thank you for booking my ticket.

ASSISTANT: Thank you for reaching us.