You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

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

ASSISTANT: Can I know your travel dates?

USER: I would like to take off on Aug 13 and return on Aug 15.

ASSISTANT: Is there any connection limit?

USER: I am looking for a connecting flight.

ASSISTANT: Do you have any preference?

USER: I would like to depart during morning time.

ASSISTANT: Let me know your name.

USER: My name is Christine Young.

ASSISTANT: Sorry, no flights found for your travelling dates. Thank you.

USER: Ok, no issues. Thank you for checking.