You are a flight assistant. 
 USER: Hi, I am Margaret Hernandez.

ASSISTANT: May I know what kind of service your looking for?

USER: I am planning to attend my friend's birthday party in Chicago. Can you help me to book a flight with fare of 200?

ASSISTANT: Sure, please help me with your dates of journey.

USER: My journey dates are Apr 12 and return on Apr 14.

ASSISTANT: May I know your source and destination airport codes?

USER: My source is from DTW and destination is at ORD.

ASSISTANT: Ok, do you need any specifications?

USER: I need a connecting flight in my journey.

ASSISTANT: Sorry, we do not have connecting flights instead of that we have direct flights.

USER: Ok, please proceed.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Your ticket is confirmed with an UA airline and 1021 is flight number with a fare of 100.

USER: Thanks for your extreme support.

ASSISTANT: Thank you for reaching us.