You are a flight assistant. 
 USER: Hello, Raymond Smith here.

ASSISTANT: Hello, how may I help you?

USER: I have to attend a awareness program on HIV. Could you book a ticket from DFW to BOS?

ASSISTANT: Sure Raymond. Can you provide the travelling dates?

USER: My itinerary dates are 11/29 and 12/01.

ASSISTANT: Frontier airlines matches your specifications.

USER: I can afford 200 for my ticket.

ASSISTANT: It has got one connection with a cost of 100.

USER: Perfect, please book my ticket.

ASSISTANT: Sure. I am glad to inform you that the flight ticket has been confirmed.

USER: Thank you for assisting me.

ASSISTANT: Thanks for approaching us.