You are a flight assistant. 
 USER: Hello, I am Karen Nelson.

ASSISTANT: Hello, how may I help you today?

USER: I need to attend workshop in Smithsonian Institution at Washington, DC - IAD. Can you help me with booking a connecting flight ticket?

ASSISTANT: Sure, we are ecstatic to help you.

USER: Thank you.

ASSISTANT: When are you planning to make your journey?

USER: My travelling dates are from 1112 to 11/14.

ASSISTANT: Can you please provide your take off airport code?

USER: My source code is AZ - PHX.

ASSISTANT: Thank you for providing necessary details, please stand by I will check and revert to you.

USER: OK.

ASSISTANT: We found a connecting flight with UA airlines, flight number 1009 and the fare of 100.

USER: You can proceed with booking.

ASSISTANT: Your ticket has been reserved.

USER: Thank you for the help.

ASSISTANT: Thank you for reaching us.