You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: Can you please help me changing my recent reservation?

ASSISTANT: Please share your name.

USER: Ok, myself Thomas Perez.

ASSISTANT: There is reservation on your name, may I know your travel dates please?

USER: Ok, my travelling dates are 05/26 and 05/28.

ASSISTANT: Can I know your airport codes please?

USER: My trip codes are PHL to PHX.

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

USER: Ok, please proceed.

ASSISTANT: Your ticket is booked, flight number 1003.

USER: Ok, thank you.

ASSISTANT: Thank you for opting us.