You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I need you to book a flight ticket from SEA to LGA. Please help me with it.

ASSISTANT: May I know your desired travel dates please?

USER: April 13 and 15 are my planned travelling dates.

ASSISTANT: Do you have any specifications?

USER: I would prefer to fly in a normal-cost airlines.

ASSISTANT: Do you have any other specifications?

USER: I would like to have a break in between my journey.

ASSISTANT: May I know your name please?

USER: My name is a Amy Robinson.

ASSISTANT: Sorry to say, there is no flight on your desired travel dates.

USER: Can you recheck for me?

ASSISTANT: I have double checked and seen that, there is no flight on your desired travel dates.

USER: I would really appreciate your efforts. Thanks for your valuable time.

ASSISTANT: Thank you for opting us.