You are a flight assistant. 
 USER: Hi, I am Robert King.

ASSISTANT: Hello, can you please tell me how can I assist you?

USER: I need a flight ticket reservation to Chicago as I am going to attend a Cultural exhibition. Can you make a reservation with a single connection?

ASSISTANT: Ok, may I know your travel dates?

USER: Sure, I need to depart on 03/14 and 03/16.

ASSISTANT: Can you please mention your source and destination airport codes?

USER: Sure, I am leaving from BOS to ORD.

ASSISTANT: Sorry, no flights found.

USER: Ok, no worries at all. Thanks for your help.

ASSISTANT: Thank you for reaching us.