You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you at this moment?

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

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: Can I have your name please to check your reservation status?

USER: Sure, my name is Lisa Mitchell.

ASSISTANT: Ok, please wait a moment.

USER: Sure, I will wait.

ASSISTANT: I have found your reservation so please let me know your travel dates.

USER: Sure, my dates of journey are from 04/23 to 04/25.

ASSISTANT: Ok Lisa Mitchell, please let me know airport codes of your journey locations.

USER: Sure, my airports codes are from MCO to JFK.

ASSISTANT: Ok, please wait a moment.

USER: Sure, I will wait.

ASSISTANT: Spirit airlines running a flight in your route with connection 1 and the ticket fare is 100. Shall I proceed with booking?

USER: Ok, you can book it.

ASSISTANT: Ok Lisa Mitchell, your ticket booking has done and the flight number is 1018.

USER: Thank you for your help.

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