You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I serve you the best today?

USER: I am planning to attend music concert at BOS, can you please help me with booking a flight ticket from DEN?

ASSISTANT: Sure, can I know your planned travel dates?

USER: I would like to take off on July 17 and return on July 19.

ASSISTANT: Kindly mention your connection limit?

USER: I am looking for a connecting flight.

ASSISTANT: Is there any other requirements, please let me know?

USER: I would like to depart during afternoon time.

ASSISTANT: May I know your name please?

USER: My name is Samantha Martin.

ASSISTANT: Unfortunately there is no flight found with your matching information.

USER: Ok, no issues. Thank you for the information.

ASSISTANT: Thank you for choosing us.

USER: You are welcome.