You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, Please inform me how can I best aid you today?

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

ASSISTANT: Sure, I can help you in that. Before that I need to know your good name to track the details?

USER: Sure, my name is Donald Hernandez.

ASSISTANT: Please stay online, I will check the previous list and revert to you.

USER: Sure, I will wait.

ASSISTANT: There is a reservation found on your name, To proceed further may I know your selected airport codes?

USER: Sure, my respective airport codes of journey are from HOU to CLT.

ASSISTANT: Ok, Can you please share me your schedule dates?

USER: Sure, my planned dates of journey are from Nov, 16 to Nov, 18.

ASSISTANT: Do you need any flag stop in between journey?

USER: Yes, I need a connecting flight.

ASSISTANT: Is there any other specifications for you?

USER: Not required.

ASSISTANT: Ok, We have found a connected flight with Spirit airlines, flight number 1004 and the fare of 300. Would you like me to book the ticket?

USER: Ok, you can book it.

ASSISTANT: Sure, a seat has been reserved successfully for a economy class flight.

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

ASSISTANT: Thank you for your presence. We hope to serve you again.