You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Debra Parker here.

ASSISTANT: How can I assist you?

USER: Actually, I made my booking last week with wrong details, will you please help me in changing my reservation?

ASSISTANT: Sure. May I know the details of journey?

USER: My new reservation departs from DCA and returns from IAD.

ASSISTANT: Mention the dates please.

USER: Sure, my dates of travelling are 03/08 to 03/10.

ASSISTANT: There is a flight with 1 connection with airline:Delta. Can I book it?

USER: Yes, proceed with the booking.

ASSISTANT: Your ticket is booked with number 1013. Happy journey.

USER: Thank you.