You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Catherine Campbell.

ASSISTANT: How can I assist you?

USER: I want to book a flight ticket from HOU to LAS. Please help me in booking a flight ticket.

ASSISTANT: Sure, can I know the travel dates please?

USER: My dates of journey are from 06/14 to 06/16.

ASSISTANT: Ok, wait a moment please.

USER: Sure.

ASSISTANT: There is a connecting flight in UA airline with price 100, can I book it?

USER: Please proceed for booking.

ASSISTANT: Your ticket has been booked with flight number 1004.

USER: Thank you for booking.

ASSISTANT: Thank you for approaching us.