You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I want to change my reservation today, can you please help me?

ASSISTANT: Sure, I will help you. May I know your name please?

USER: Thanks. My name is Jonathan Walker.

ASSISTANT: There is a reservation on your name, please share your desired travel dates.

USER: Ok, no issues with it. Anyways, thank you for checking with my booking.

ASSISTANT: There is a reservation, please share your desired travel dates.

USER: Ok, my new travelling dates will be from 03/24 to 03/26.

ASSISTANT: Can I know your airport codes please?

USER: My airport codes for this journey will be from DEN to OAK.

ASSISTANT: There is a flight with connection limit 1 and fare 100, is it ok for you?

USER: Ok, please book it for me.

ASSISTANT: Your ticket is booked, flight number 1025 with American Airlines.

USER: Thank you for booking my reservation.

ASSISTANT: Thank you for opting us.

USER: Most welcome.