You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

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

ASSISTANT: Sure, I will help you in booking the ticket. May I know your travelling dates please?

USER: I would like to take off on Aug 2 and return on Aug 4.

ASSISTANT: Do you have any other specifications?

USER: I am looking for a connecting flight.

ASSISTANT: Please help me with your name for booking.

USER: My name is David Robinson.

ASSISTANT: Sorry for this inconvenience, I could not find any flight with your requirements.

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

ASSISTANT: Thank you for reaching us.