You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am planning to attend a Hockey competition in Boston BOS from Chicago ORD. Can you make a reservation for me?

ASSISTANT: Sure, I am here to help you with the ticket booking. Can I know your airlines preference?

USER: Thank you, I need a normal cost airline to travel.

ASSISTANT: Ok, please provide me your planned travel dates.

USER: Sure, I am planning to travel  on these days that is on Dec 13 and return on Dec 15.

ASSISTANT: Ok, please let me know your good name to proceed further.

USER: Yes, I am Patrick Young.

ASSISTANT: Ok, please give me a minute. In the meanwhile, tell me your other specifications if any?

USER: Yes, I want to return in the afternoon time.

ASSISTANT: Sorry to intimate you that, there is no flight found which is matching to your requirements.

USER: Ok, not an problem. Thank you for your information.

ASSISTANT: You are welcome. Thank you for reaching us.