You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Myself Barbara Anderson. Due to some urgent meeting, I am going to change my reservation. Can you please help me for this?

ASSISTANT: Sure, I will help you. Please wait, I will check your reservation status and let you know.

USER: Ok, I will wait for your kind response.

ASSISTANT: I found your reservation, may I know your travel dates?

USER: I am planning my trip on Nov 15, and again I will return back on Nov 17.

ASSISTANT: Ok, may I know your source and destination airport codes?

USER: My source airport codes are HOU to LAS?

ASSISTANT: Ok, do you have any preferences?

USER: I am flexible with single connection flight.

ASSISTANT: Flight-1023 is available as per your requirements in Hawaiian airlines and the ticket fare is 200 only. Can I book the ticket for you?

USER: Yes, I think that can work for me. Please reserve the ticket.

ASSISTANT: Your ticket is confirmed successfully in economy class.

USER: Thank you very much for reserving the ticket.

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

USER: You are welcome.