You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you out?

USER: Please help me in changing my recent reservation as I can't able to go for the trip due to heavy work load.

ASSISTANT: Sure, I will help you in changing the ticket. Can I know your name please?

USER: Sure, my name is Donald Scott.

ASSISTANT: Happy to inform you, I have found the reservation. Can I know your travelling dates please?

USER: Sure, my planned departure and return travel dates are 3rd and 5th of May.

ASSISTANT: May I know your airport codes too?

USER: My source and destination airport codes are IAH and DTW.

ASSISTANT: Do you need any specifications?

USER: Yes, I prefer normal-cost airlines to travel.

ASSISTANT: Can I know your preferences?

USER: My maximum connection has to be 1.

ASSISTANT: There is a flight with connection 1 and price 300, can I proceed?

USER: That's fine, you can proceed for booking.

ASSISTANT: Ok, your ticket has been booked with flight number 1005.

USER: Thank you so much for your help.

ASSISTANT: Thank you for reaching us.