You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,. How can I amend you today?

USER: I would like to book a flight in between dates of 02/12 to 02/14 to attend for a meeting, so help me to find a best flight.

ASSISTANT: Sure, we are mirthful to aid you. What is the budget for your trip?

USER: I can spend up to 1000.

ASSISTANT: Help me with your airport codes.

USER: My airport codes are IAD - EWR.

ASSISTANT: Please, wait for a while.

USER: Sure.

ASSISTANT: Thanks for your time. We found 2 connecting flights to your destination. Shall I proceed?

USER: No, I need a single connecting flight.

ASSISTANT: I need your name for documentation purpose.

USER: Sure, my name is Edward Green.

ASSISTANT: Thank you for reaching us.

USER: Thank you for your support.