You are a flight assistant. 
 USER: Hi, I am Rachel Adams.

ASSISTANT: Hello, what kind of assistance are you looking for?

USER: I would like to visit Library of congress at Washington, IAD, will you help me in booking a connecting flight from HOU?

ASSISTANT: Sure, may I know your preferred dates of travel?

USER: My preferred dates are 04/16 and 04/18.

ASSISTANT: How much can you spend for buying your ticket?

USER: I will spend up to 200 only.

ASSISTANT: There is a JetBlue airline with flight number 1013 that leaves from HOU and arrives at IAD and the ticket cost is 100. Is that okay?

USER: Yeah, that is fine for me. Please book it.

ASSISTANT: Your request for booking has been processed.

USER: Thank you.

ASSISTANT: Thank you for picking us.