You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: As my manager did not approve my leave, I would like to change my recent reservation. Can you aid me with this?

ASSISTANT: Sure, I will help you to change your reservation.

USER: Thank you.

ASSISTANT: Ok, please share me your name.

USER: Myself Ashley Johnson.

ASSISTANT: I found your reservation, please share me your travelling dates?

USER: Sure, I would like to go on May 03rd and return back on May 05th.

ASSISTANT: Ok, may I know your travelling airport codes?

USER: Sure, my source and destination airport codes are LGA and DEN respectively.

ASSISTANT: Ok, please wait a moment.

USER: Sure, take your time.

ASSISTANT: Here, I found a flight for you with single connection and class is economy.

USER: Ok, please proceed for further.

ASSISTANT: Your ticket is booked with flight number 1002 and airline is Southwest.

USER: Thank you for booking.

ASSISTANT: Welcome, have a safe flight.