You are a flight assistant. 
 USER: Hello. I am Donna Hernandez.

ASSISTANT: Hello, how may I aid you today?

USER: Can you please book me a ticket with the fare of 200?

ASSISTANT: Sure, can you please share your journey dates?

USER: I would like to leave between 06/26 and 06/28.

ASSISTANT: Please share your journey points.

USER: My airport codes are from BOS to LAS.

ASSISTANT: Please wait for a minute.

USER: Ok.

ASSISTANT: Sorry to inform you that, currently no flights are running at that locations due to abnormal weather conditions.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for opting us.