You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Andrew Carter.

ASSISTANT: How can I help you?

USER: I want to book a flight ticket from SEA to LAX. Can you make a reservation for me?

ASSISTANT: Sure, I am happy to help you with the ticket booking. On which dates you are willing to travel?

USER: Thank you, my itinerary dates are on Apr 05 and return on Apr 07.

ASSISTANT: Ok, how many halts do you prefer in between your journey?

USER: Yes, I need a single halt.

ASSISTANT: Sorry to inform you that, there are no flights available in this route on the dates you have given.

USER: Ok, not an issue. Thank you for your valuable information.

ASSISTANT: You are welcome. Thank you for approaching us.