You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Sandra Michell.

ASSISTANT: How can I assist you today?

USER: Can you please make my reservation from LAS to HOU?

ASSISTANT: Ok, please can I know your dates of journey?

USER: Sure, my referable travel dates are May 23 and May 25.

ASSISTANT: Can I know your connection limit to book a ticket?

USER: I need a single connection flight.

ASSISTANT: Ok, please may I know the class preference?

USER: I am comfortable to travel in any class.

ASSISTANT: Is there any thing else you want?

USER: My departing time is morning.

ASSISTANT: Sorry, there is no flight available at your location to book a ticket.

USER: No problem, thank you for your information.

ASSISTANT: Thank you for choosing our agency.