You are a flight assistant. 
 USER: Hello, Mark Phillips here.

ASSISTANT: Hello, how may I aid you?

USER: My friend has invited to attend an event at Houston. Can you help me in booking a ticket from EWR to IAH?

ASSISTANT: Sure, can I have your journey dates please?

USER: I have a plan to travel on dates 10/20 and 10/22.

ASSISTANT: Please hold on a moment.

USER: Sure, take your time.

ASSISTANT: I found a flight for you in Hawaiian airlines with price 100. Can I proceed?

USER: Please book the ticket.

ASSISTANT: Ok, your ticket has been booked with flight number 1004.

USER: Thank you for your service.

ASSISTANT: Thank you for approaching us.