You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Donna Hall here.

ASSISTANT: How can I assist you?

USER: I want to book a flight from IAD to LGA for attending a wedding, can you help me?

ASSISTANT: Sure Donna, can I know the travel dates please?

USER: My travelling dates will be from 11/08 to 11/10.

ASSISTANT: Ok, wait a moment please.

USER: Sure, take your own time.

ASSISTANT: There is a flight in UA airline with price 100, can I book it?

USER: Ok, please reserve my ticket with this flight.

ASSISTANT: Your ticket has been booked with flight number 1023.

USER: Thank you for helping me.

ASSISTANT: Thank you for approaching us.

USER: Most welcome.