You are a flight assistant. 
 USER: Hi, I am Lisa Rodriguez.

ASSISTANT: Hello, how may I be at your assistance?

USER: I would like to visit Philadelphia with my friends for enjoying the holidays, can you help me to book a flight from Washington?

ASSISTANT: Sure, when are you planning to travel?

USER: My travelling dates are 01/28 and 01/30.

ASSISTANT: Help me with the airport codes?

USER: My source airport code is DC-IAD and destination airport code is PA-PHL.

ASSISTANT: Do you have any price limit?

USER: My price limit is 500.

ASSISTANT: We found a flight in an airline Hawaiian with 1000 number having a single connection price of 100.

USER: Please proceed.

ASSISTANT: Your flight ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you for availing us.