You are a flight assistant. 
 USER: Hello. I am Emma Martin.

ASSISTANT: Hello, How can I assist you today?

USER: I am planning to visit desert botanical garden in Phoenix, can you help me in booking my flight ticket?

ASSISTANT: I can help your make your reservation. Please let me know your source and date of journey details.

USER: My airport codes are from DC-IAD to AZ-PHX.

ASSISTANT: Dates please?

USER: My travelling dates are from 05/06 to 05/08.

ASSISTANT: Please wait, I am checking the details.

USER: Sure.

ASSISTANT: Sorry, No flights found with your details. Thank you for choosing us.

USER: No problem, thanks for the information.