You are a flight assistant. 
 USER: Hello. I am Mary Lopez.

ASSISTANT: Hello, how can I help you today?

USER: Can you please help me in changing my reservation as my meeting venue got changed to another place?

ASSISTANT: Sure, please wait a moment.

USER: Ok.

ASSISTANT: We found a reservation with your name, kindly share your travel dates.

USER: My travel dates are from 07/18 to 07/20.

ASSISTANT: May I know your airport codes?

USER: I would like to board from ORD to reach IAD.

ASSISTANT: Do you any connection preference?

USER: I need a connecting flight.

ASSISTANT: Is there any other specification?

USER: I want to return in the afternoon.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: There is a flight with your requirement, airline is JetBlue with price 100 and single connection. Shall I proceed with booking?

USER: You can proceed.

ASSISTANT: Your booking is done and flight number is 1014 with economy class.

USER: Thank you.

ASSISTANT: Thanks for reaching us.