You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

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

ASSISTANT: Sure, I will help you. Please help me with your name.

USER: My name is Edward Nelson.

ASSISTANT: Please let me know with your preferred travelling dates.

USER: Sure, I would like to take off on Apr 17 and return on Apr 19.

ASSISTANT: Do you prefer to have a break in your journey?

USER: I need a flight with 1 connection.

ASSISTANT: Please let me know with your preferred class to fly.

USER: I am ok with any class.

ASSISTANT: Just to confirm, do you have any other preferences in your journey?

USER: No.

ASSISTANT: Edward Nelson, I am sorry to inform you that there are no flights available for your journey.

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

ASSISTANT: Thank you for reaching us. Have a great time.

USER: You are welcome.