You are a flight assistant. 
 USER: Hello, I am Emily Baker.

ASSISTANT: Hello, how can I provide assistance to you?

USER: Can you please help me in booking a flight ticket to Washington, DC - IAD?

ASSISTANT: Sure, could you please help me with your travel dates?

USER: I want to fly on 07/10 and return on 07/12.

ASSISTANT: Do you have any specifications?

USER: My price limit should not exceed 200.

ASSISTANT: Please share your source code?

USER: I want to fly from Boston, MA - BOS.

ASSISTANT: Please wait a while, I will check and get back to you.

USER: Sure.

ASSISTANT: Sorry, there were no flights found matching your fare limit.

USER: It's ok, not a problem. Thank you for your information.

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