You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Myself Patrick Lewis. I want to change my travel dates in my previous reservation so can you please help me with that?

ASSISTANT: Sure, please wait for a moment.

USER: Ok, thank you for your response.

ASSISTANT: We found a reservation on your good name.

USER: Thank you.

ASSISTANT: Please share me your planned travel dates.

USER: I want to take off on May 25 and book my return ticket also on May 27.

ASSISTANT: May I know your source and destination codes?

USER: I would like to fly from IAD and destination airport is BOS.

ASSISTANT: Do you have any specifications?

USER: I want to depart in morning time so please check with this.

ASSISTANT: Do you have any class preference?

USER: I want a economy class flight.

ASSISTANT: We found an airline: Delta, flight number: 1021 and price is 100 with one connection.

USER: Please confirm this flight ticket for me.

ASSISTANT: Your flight ticket has been reserved. Your depart time is 3:00AM.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.