You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: Myself Melissa Scott. I need to change my reservation due to my planned event got postponed. So please help me with that.

ASSISTANT: Sure, I will do that for you. Please wait for a while, I have to check your reservation status first.

USER: Sure, take your time.

ASSISTANT: I found your reservation, please tell me your airport codes?

USER: That's great. I need to travel from DFW to AUS.

ASSISTANT: Ok, let me know your travel dates.

USER: Sure, I would like to travel on dates of 10/13 and 10/15.

ASSISTANT: Ok, please wait for a moment.

USER: Sure, take your time.

ASSISTANT: There is a flight-1018 available with UA airlines and the ticket fare is 100 only. Is it ok for you?

USER: That is fine, please proceed with booking.

ASSISTANT: Scott, your ticket is booked successfully.

USER: Thank you for your help.

ASSISTANT: You are welcome and thank you for contacting us.