You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you at this moment?

USER: I am Mark Martinez from Phoenix. I want to go Denver next week to meet my friends there, can you please book a flight ticket for me?

ASSISTANT: Sure Mark Martinez, I will help you with that.

USER: Thank you.

ASSISTANT: Can I have your travel dates please?

USER: I want to take off on 04/01 and book my return ticket also on 04/03.

ASSISTANT: Ok, please provide me airport codes of your locations.

USER: I want to fly from PHX and destination airport is DEN.

ASSISTANT: Please wait a moment and I will check for flight availability.

USER: Ok.

ASSISTANT: Based on your information, Hawaiian airline is ready to serve you with 1 connection with a minimum fare of 100 is available for you. Shall I proceed with this?

USER: Please book this flight ticket for me.

ASSISTANT: Ok Mark Martinez, I have reserved a ticket with flight number 1000.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us, have a great journey.