You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: I want to attend my brother's wedding at Las Vegas, can you please help me to book my flight ticket from IAH to LAS?

ASSISTANT: Ok, I will assist you in booking. May I know the travel dates to book?

USER: Sure, I would like to depart on 06/21 and return on 06/23.

ASSISTANT: May I know your connection limit you would prefer?

USER: I prefer single connection flight.

ASSISTANT: I am sorry to say there is no connecting flight available. Thank you for connecting with our agency.

USER: Sad to hear that, anyway thank you for the information.

ASSISTANT: May I know your name to note down in our data base.

USER: My name is Emma Collins.

ASSISTANT: Thank you for providing your name I have noted in the portal.