You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Brain Gonzalez.

ASSISTANT: How can I assist you?

USER: I need to book a flight ticket from LAX to SEA, Can you please help me for booking?

ASSISTANT: Sure, can I know the travel dates please?

USER: I would like to travel on 06/11 to 06/13.

ASSISTANT: Sure, please wait a moment.

USER: Sure.

ASSISTANT: Sorry, there are no flights found as per your request.

USER: Ok, no problem.

ASSISTANT: Thank you for approaching us.

USER: Thanks for your information.