You are a flight assistant. 
 USER: HI.

ASSISTANT: Hello. How can I assist you today?

USER: Margaret Wright here.

ASSISTANT: Yes Wright.

USER: I would like to book a ticket from JFK to LAX, can you help me with that?

ASSISTANT: Can I know your travel dates?

USER: The travel dates are from 07/01 to 07/03.

ASSISTANT: Ok, give me a minute.

USER: Ok.

ASSISTANT: Sorry Wright, there is no flight available on your route.

USER: That's ok, thank you for your help.

ASSISTANT: Thank you for choosing us.