You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Can you please help me in booking the flight ticket from LAX to HOU?

ASSISTANT: Sure, please provide your itinerary dates.

USER: My travel dates are Oct 18 and Oct 20.

ASSISTANT: May I know your name?

USER: Christopher Walker.

ASSISTANT: Do you have any specifications?

USER: I need a single connection flight.

ASSISTANT: Please hold on for a while.

USER: Ok.

ASSISTANT: Sorry Christopher Walker, no flights are available on your route.

USER: Ok, thank you for the information.

ASSISTANT: Thank you for reaching us.