You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Elizabeth Young here.

ASSISTANT: How can I guide you at this moment?

USER: I want to attend a Seminar in Houston. Can you please help me for booking the flight ticket?

ASSISTANT: Sure, I will help you with this. Can you please provide your journey dates?

USER: My travelling dates are from 02/19 to 02/21.

ASSISTANT: May I know your nearest airport codes of journey please?

USER: My airport codes are from EWR to IAH.

ASSISTANT: There is a direct flight with UA airlines, shall I book your ticket?

USER: Make sure my connections limit is 1.

ASSISTANT: Elizabeth Young, there is no single connection flight available on this route on your provided dates.

USER: Anyway, thanks for the information.

ASSISTANT: Thank you for contacting us.