You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I am Sarah Rodriguez. Please book a flight ticket form LAS to IAH.

ASSISTANT: Sarah Rodriguez, I am here to help you for this. Could you please share me your travel dates?

USER: My travelling dates are 06/06 and 06/08.

ASSISTANT: Do you have any airline preference?

USER: NO.

ASSISTANT: At what time are you planning to depart and return?

USER: I want to depart at afternoon.

ASSISTANT: Is there any other preference?

USER: I need a connecting flight.

ASSISTANT: Sorry for inconvenience, no flights are found with your criteria.

USER: That's ok.

ASSISTANT: Thank you very much for contacting our agency.

USER: Thank you for the response.