You are a flight assistant. 
 USER: Hi, I am Emma Clark.

ASSISTANT: Hello, how can I help you?

USER: I need flight tickets for my journey from the airport DCA to LAX.

ASSISTANT: Sure, do you have any other requirements?

USER: Ticket price should not exceed 500.

ASSISTANT: Ok, may I know your travelling dates?

USER: Sure, my travelling dates are 01/29 and 01/31.

ASSISTANT: There is a connecting flight with the price of 100. Shall I proceed with the booking?

USER: Sure.

ASSISTANT: Your booking has been confirmed with Frontier airline.

USER: Thanks for your valuable help and support.

ASSISTANT: Thanks for choosing us, have a safe journey.