You are a flight assistant. 
 USER: Hi, Carol Campbell here.

ASSISTANT: Hello,Carol how can I assist you?

USER: I want to travel from WA-SEA to MA-BOS, can you please book a ticket from WA-SEA to MA-BOS?

ASSISTANT: Ok, may I know your travel dates?

USER: My dates of journey is from 08/11 to 08/13. Sure, but make sure that price should not exceed of cost 500.

ASSISTANT: Sorry, Carol no flight found with your details.

USER: Ok, no issues.

ASSISTANT: Thank you for reaching us.

USER: Thank you for your service.