You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: I am Deborah Smith want to visit LGA for shopping, can you book a ticket from EWR?

ASSISTANT: Sure, can I know the travel dates please?

USER: Sure, my travelling dates will be 04/29 and 05/01.

ASSISTANT: Ok, wait a moment please.

USER: Ok.

ASSISTANT: There is a flight in Frontier airline with price 400, can I book it?

USER: Can you please check for the flight with price under 200?

ASSISTANT: Sure, please wait a moment.

USER: Sure.

ASSISTANT: Sorry, there are no flights available as per your request.

USER: That's ok, thank you.

ASSISTANT: Thank you for approaching us.