You are a flight assistant. 
 USER: Hello. John Miller here.

ASSISTANT: Hello Miller, how may I aid you?

USER: I have an interview in Detroit.Can you please help me for booking a ticket?

ASSISTANT: Ok, may I know your preferable dates of travelling?

USER: My departure date is 06/22 and return date is 06/24.

ASSISTANT: Could you please help me with your travel airport codes for booking?

USER: My airport codes are from TX-IAH to MI-DTW. Make sure my connections limit is 1.

ASSISTANT: Ok, I have found a flight based on your details. Flight number 1021 from Delta airlines with 1 connection with the fare of 100 is available for your request.

USER: Please proceed for booking.

ASSISTANT: Ok, your ticket is booked.

USER: Thank you for helping me.

ASSISTANT: Thank you for using our service, have a safe journey.