You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Melissa Williams.

ASSISTANT: How can I be a help for you?

USER: I want to travel from SFO to DTW.

ASSISTANT: Ok Melissa, please tell me your travelling dates?

USER: My preferable dates are from 05/04 to 05/06.

ASSISTANT: Ok, please hold on for a moment.

USER: Sure, take your time.

ASSISTANT: I found a flight 1004 of Delta airlines on your requested dates, may I confirm your ticket?

USER: Please proceed with the booking.

ASSISTANT: Ok, your ticket is confirmed.

USER: Thank you for your time.

ASSISTANT: Thank you, have a happy journey.