You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: Will you help me in booking a ticket with the name of Samantha Lewis under the price limit of 200?

ASSISTANT: Ok, may i know your travel dates?

USER: I need to do some project work in Botanical Garden on 01/06. After the completion of this, I have to return on 01/08.

ASSISTANT:  Help me with your journey points?

USER: Journey points are Los Angeles, LAX and PHL.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT:  Sorry, no flights are available on your travel dates.

USER: Ok, thank you.

ASSISTANT:  Thank you for availing us.