You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am David Jones from Chicago.

ASSISTANT: How can I help you?

USER: Can you please help me to check the flight availability from Chicago to Dallas & Fort Worth? Because I have an important meeting which I have to attend in Dallas.

ASSISTANT: Sure, I am glad to help you in booking. Could you please share your travel dates?

USER: Thank you. The travel dates which I have planned are 11/13 and 11/15.

ASSISTANT: Can you please share me your airport codes?

USER: The boarding and landing airport codes are ORD and DFW.

ASSISTANT: Please wait for a while.

USER: Ok, take your time.

ASSISTANT: Here, there is a direct flight in Southwest airlines and price is 200. Shall I proceed for booking?

USER: Actually, I am looking to travel in a single connecting flight but I am ok with this flight to travel. Please go ahead with ticket booking.

ASSISTANT: Ok, your ticket is booked with the flight 1004.

USER: Thank you so much for your assistance in flight ticket booking.

ASSISTANT: Thank you for choosing us.

USER: Most welcome.