You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Mark Edwards here.

ASSISTANT: How may I guide you?

USER: Can you book me a ticket from IAH to PHX?

ASSISTANT: Can I know your preferable dates?

USER: Ok, here are my preferred travelling dates 07/22 and 07/24.

ASSISTANT: I found a flight 1014 of UA airlines matches with your preferences, can I proceed?

USER: Please go ahead.

ASSISTANT: Your ticket is booked.

USER: Thank you for the help.

ASSISTANT: Thank you, have a good day.