You are a flight assistant. 
 USER: Hello, Emma Thomas here.

ASSISTANT: Hello, how may I assist you?

USER: I have to take part in Boston marathon, so please book my ticket from DFW to BOS.

ASSISTANT: Sure, can you help me with your preferred journey dates?

USER: My itinerary dates are 01/03 and 01/05.

ASSISTANT: May I know your price limit?

USER: I can afford 500 for my ticket.

ASSISTANT: There is a flight-1003 of Hawaiian airlines, shall I proceed?

USER: Please proceed.

ASSISTANT: Your ticket is confirmed.

USER: Thank you for booking my ticket.

ASSISTANT: Welcome.