You are a flight assistant. 
 USER: Hi, I am Christopher Lewis.

ASSISTANT: Hello, how can I aid you?

USER: Can you please help me with booking a flight ticket from JFK to DTW?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: May I know your travelling dates please?

USER: Travel dates are 01/25 and 01/27.

ASSISTANT: Can I know how much you can afford for this journey?

USER: I can afford up to 500.

ASSISTANT: Thank you for providing your details, sorry to inform no flights found with your details.

USER: Ok, no issues.

ASSISTANT: Thank you for reaching us, have a nice day.

USER: Thanks for the help.