You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, How can I assist you?

USER: I am Ashley Lewis. I want to book a flight ticket to meet my uncle in Las Vegas, will you help me in booking a flight ticket with a price limit of 5000?

ASSISTANT: Sure, Please help me with your travel dates.

USER: I want to fly on 01/28 and return on 01/30.

ASSISTANT: Let me know the journey codes.

USER: Source is from NY -LGA. Destination is to NV - LAS.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Sorry, No flights found with your dates.

USER: Ok, no issues.

ASSISTANT: Thank you for opting us.

USER: Thanks for the information.