You are a flight assistant. 
 USER: Hi, I am Karen Jones from Philadelphia.

ASSISTANT: Hello, what kind of service are you looking from us?

USER: Could you check whether any flight is running on the routes of Philadelphia to Washington, on 04/07? If found, Please book a ticket on my name for me.

ASSISTANT: Sure, can you please provide your airport codes?

USER: My airport codes are PA - PHL and DC - IAD.

ASSISTANT: May I know when would you like to return?

USER: I would you like to return on 04/09.

ASSISTANT: Do you have any other requirements to be met?

USER: Yes, I need a flight within the fare 200. And I am looking for a connecting flight.

ASSISTANT: Ok, please stay online. I will check with airlines and let you know the availability.

USER: Sure, make is in your possible time.

ASSISTANT: We found a connecting flight for you, flight details are as UA airline, fare 100 and flight number 1001.

USER: Ok, Please proceed now.

ASSISTANT: Your booking has been processed.

USER: Thanks for your excellent service.

ASSISTANT: Thank you for availing us.