You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: Jeffrey Mitchell here. I would like reserve a ticket to Washington to do a trekking at Mount Rainier, can you please help me in booking a ticket?

ASSISTANT: Sure, can I know your dates of journey please?

USER: The travelling dates should be 11/21 to 11/23.

ASSISTANT: May I know your airport codes please?

USER: Source airport code is PHL and destination airport code is IAD.

ASSISTANT: Do you have any connection limit?

USER: Connection limit should be 1.

ASSISTANT: Please wait for a while, I will check and revert you.

USER: Sure, make sure that price limit should be 500.

ASSISTANT: We found a flight with Spirit airlines, flight number is 1024 with one connection and price is 100.

USER: Please proceed booking my ticket.

ASSISTANT: Ok, your ticket has been booked.

USER: Thank you for your quick response.

ASSISTANT: Thanks for choosing us.

USER: Most welcome.