You are a flight assistant. 
 USER: Hello, I am Alexander Wright.

ASSISTANT: Hello, how can I aid you today to make you happy?

USER: I have planned to visit Flower festival at Washington, DC - DCA. Can you please book a ticket under price 1000?

ASSISTANT: Sure, we are ecstatic to help you. Let me know your source point.

USER: My source is San Francisco.

ASSISTANT: Ok, Can you please assign dates of your journey?

USER: My depart date is on 11/01 and return date is on 11/03.

ASSISTANT: Ok, please be on hold.

USER: Sure.

ASSISTANT: Please help me with your source airport code.

USER: It is CA - SFO.

ASSISTANT: Thanks for your details. We found a flight in UA plane with a fare of 300 and the flight number is 1009.

USER: Ok, please move further.

ASSISTANT: Sure, your ticket has been booked.

USER: Thanks for booking.

ASSISTANT: Thank you for availing us.