You are a flight assistant. 
 USER: Hello,. I am Susan Walker.

ASSISTANT: Hello, how can I aid you?

USER:  I want to travel to Mount Rainier National Park at Washington. Can you book me a ticket within the range 5000?

ASSISTANT: Sure. May I know your travelling dates?

USER: I want to travel on 04/21, and need to catch return flight on 04/23.

ASSISTANT: Can you share me your airport codes?

USER: I need to leave from my nearest airport LGA to reach IAD.

ASSISTANT: Do you have any preferences?

USER: I am comfortable with any flight.

ASSISTANT: There is a flight 1000 in JetBlue airline and price 600 with a connection. Shall I proceed?

USER: Proceed.

ASSISTANT: Reservation of your ticket has been done.

USER: Thanks for the help.

ASSISTANT: Thank you.