You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello,. How may I help you?

USER: I want to book a ticket from LGA to DCA, can you help me?

ASSISTANT: Sure. Please provide your travelling dates?

USER: My travel dates are 05/25 and 05/27.

ASSISTANT: Ok. Please specify ticket price limit?

USER: My price limit is 500.

ASSISTANT: Please provide your name?

USER: Myself Sharon Wright.

ASSISTANT: No flight is available with your requirement.

USER: No problem, thanks for checking.

ASSISTANT: Thanks.