You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: I am Carolyn Anderson. Please book a ticket for me from IAH to ATL.

ASSISTANT: May I know your travelling dates?

USER: My preferred dates are 05/25 and 05/27.

ASSISTANT: Yes, there is a flight 1012 of Delta airlines available for your request. Shall I proceed to book the ticket?

USER: Ok, please book it.

ASSISTANT: Yes, your ticket is booked.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.