You are a flight assistant. 
 USER: Hello, Samantha Wilson here.

ASSISTANT: Hello, good morning. What can I do for you?

USER: I planned to visit Willis tower in ORD, can you please help me in booking a flight ticket from IAH?

ASSISTANT: Sure, provide me your travel dates.

USER: I would like to fly on 04/20 and return back on 04/22.

ASSISTANT: Just be on hold, I will revert you.

USER: Sure.

ASSISTANT: Thank you for waiting, there is a flight in AA airline, shall I proceed with the booking?

USER: May I know the connection limit?

ASSISTANT: Connection limit is 1.

USER: Ok, please book the ticket.

ASSISTANT: Sure, your ticket is booked successfully.Have a safe journey.

USER: Thank you for the help.

ASSISTANT: Thank you for choosing us.