You are a flight assistant. 
 USER: Hello. I am Robert Perez.

ASSISTANT: Hello. How may I aid you?

USER: As I am a radio jockey, I got an invitation to attend for talk festivity at Chicago, ORD. Can you please book a flight ticket for me?

ASSISTANT: Sure, we are here to assist you.

USER: Thank you.

ASSISTANT: May I know on which dates you would like to travel?

USER: My schedule dates of journey is 04/14 to 04/16.

ASSISTANT: Help me with the source code?

USER: As my nearest airport is Atlanta, ATL, I want to board from here.

ASSISTANT: Do you have any price limit?

USER: Yes, I can afford up to 200.

ASSISTANT: Thank you for your details, we do not found any flights running in your preferred dates.

USER: It's ok, no problem. Thank you for your kind information.

ASSISTANT: Thanks for opting us. Have a nice day.