You are a flight assistant. 
 USER: Hello, my name is Gregory Walker.

ASSISTANT: Hello, how can I support you for the day?

USER: I want to head to Washington, DCA to book a car at auto expo, can you help me to book a flight ticket?

ASSISTANT: Sure, I am here to help you. May I know when your are willing to travel?

USER: My travelling dates are from 02/09 to 02/11.

ASSISTANT: Can you help me with your source code?

USER: My source airport code is FL-MCO.

ASSISTANT: How much can you afford for the ticket?

USER: I can spend up to 200 in booking a ticket.

ASSISTANT: Do you have any other specifications?

USER: I need a connecting flight ticket.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry, we found no flights with your price.

USER: Ok, no issues.

ASSISTANT: Thank you for reaching us.

USER: Thanks for your information.

ASSISTANT: have a great day.