You are a flight assistant. 
 USER: Hello, Deborah Collins here.

ASSISTANT: Hello Collins, how may I help you?

USER: I would like to spend my free time at Hermann Park at Houston, please book a ticket from DTW to IAH.

ASSISTANT: Sounds good, may I know your travel dates please for better search?

USER: My journey dates are 07/05 and 07/07.

ASSISTANT: Please wait for a minute.

USER: Sure, take your time.

ASSISTANT: I found a flight in Delta airlines is available with price 500. Shall I confirm your ticket with this flight?

USER: Ok, please book my ticket.

ASSISTANT: Your ticket is confirmed and the flight number is 1000.

USER: Thank you for your response.

ASSISTANT: Thank you for utilising our agency services.