You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, do you need any assistance from my side?

USER: Actually, I want to change my reservation which is done recently due to some problems, can you please help me?

ASSISTANT: Sure, I am glad to help you and I need your name for checking purpose. Can you please provide?

USER: Sure, my name is Lisa Allen.

ASSISTANT: Thank you for your information, I have found your reservation and can you please provide your airport codes?

USER: Sure, my planned airport codes are from DCA to AUS.

ASSISTANT: Can you please provide your preferable travel dates?

USER: Sure, my travelling dates are from Feb, 05 to Feb, 07.

ASSISTANT: Is there any other preferences?

USER: Yes, I need a economy class.

ASSISTANT:  I found a flight with a fare of 200 and there is a 1 stop over in your journey and the flight number is 1003 in United airlines, shall I proceed with ticket booking?

USER: Ok, you can book it.

ASSISTANT: Your flight ticket booking is confirmed.

USER: Thank you for your help in booking my ticket.

ASSISTANT: Thank you for reaching us, have a great journey.