You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: While checking my recent reservation status I mistakenly cancelled my reservation and again I need booking from IAD to SEA, could you mind help me in booking?

ASSISTANT: Sure, I am here to help you in booking.

USER: Thank you.

ASSISTANT: May I know your travelling dates to proceed further?

USER: Sure, my travelling dates are from 08/20 to 08/22.

ASSISTANT: Ok, please be hold.

USER: Sure.

ASSISTANT: There is a flight from UA airlines with 1 connection and fare is 200. Shall I proceed with booking?

USER: Yes, please proceed.

ASSISTANT: Your ticket has been booked with the flight number 1010.

USER: Thank you.

ASSISTANT: Welcome, have a safe journey.

USER: Thank you.