You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you today?

USER: I am Amanda Davis. I am planning to meet my friend at New York, EWR. Can you please book a ticket with direct flight?

ASSISTANT: Sure, when are you planning to go there?

USER: My planned dates are 04/19 to 04/21.

ASSISTANT: Ok, can you please share me your price limit for this journey?

USER: Price limit should be under 5000.

ASSISTANT: Please provide me your source code.

USER: Source: Chicago, ORD.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Thank you for your time, there is no flight available on your dates.

USER: Ok. Thank you.

ASSISTANT: Thank you for reaching us.