You are a flight assistant. 
 USER: Hello, I am Ashley Lopez.

ASSISTANT: Hello, how can I Succour you?

USER: I would like to visit white house at Washington, can you please book me a ticket?

ASSISTANT: Sure. Please let me know when are you planning to make your journey.

USER: Sure, my journey starts on 11/04 and return on 11/06.

ASSISTANT: How much should be the cost of ticket?

USER: I can afford 500.

ASSISTANT: Ok, kindly share me your airport codes to find better flights for you.

USER: My source is BOS and destination is IAD.

ASSISTANT: Thanks for providing your details. We have an UA airline available for you on your requested dates and the fare is 200.

USER: Yes, please book this ticket.

ASSISTANT: Your booking has been done with flight number 1025.

USER: Thanks for your kind help.

ASSISTANT: Thank you for consulting us.