You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Brandon Jones here. Due to inconvenience of my work, I want to change my reservation.Can you please help me for that?

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Thanks for your time, I got your reservation, may I know your airport codes?

USER: I would like to travel from IAD to LGA.

ASSISTANT: Fine, let me know your travel dates too.

USER: My travel dates are 03/04 and 03/06.

ASSISTANT: There is a connecting flight-1003 with price 100 of Delta airline. Shall I proceed?

USER: You can proceed.

ASSISTANT: Ok, your reservation has been changed to new dates.

USER: Thanks for your help and information.

ASSISTANT: Welcome Brandon Jones, hope you will enjoy our service.