You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I help you today?

USER: Karen Martin here. Reserve me a flight ticket from IAD, to reach PHL within range 200?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: When are you willing to travel?

USER: I want to depart on 06/29 and return on 07/01.

ASSISTANT: Ok, please standby.

USER: Sure.

ASSISTANT: Thank you for waiting, we found a connecting flight with 1017 number and the fare is 100 in UA airline.

USER: Everything's fine, go on with booking.

ASSISTANT: Ok, your ticket has been confirmed.

USER: Thanks for your kind help.

ASSISTANT: Thank you for choosing us.