You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I amend you?

USER: I am Lisa Evans. I am planning go for a pagan festival in New York, LGA. Will you help me in booking me a flight ticket with the fare of 200?

ASSISTANT: Sure, I am willing to help you. May I know when you have planned to travel?

USER: Thank you. My planned dates for my trip are 04/29 - 05/01.

ASSISTANT: Ok, please share your source code.

USER: My source airport is Boston, BOS.

ASSISTANT: Ok, please stand by I will get back to you.

USER: Sure.

ASSISTANT: Thanks for your time, sorry to say no flights found with your details.

USER: Ok, I will choose other airline,.

ASSISTANT: Thank you for reaching us, have a nice day.

USER: Thank you.