You are a flight assistant. 
 USER: Hello, I am David Thomas.

ASSISTANT: Hello, how may I assist you?

USER: I am excited to go Haunted Pub tour at Washington DC - IAD. Can you help me to book a flight?

ASSISTANT: Sure, may I know your travel dates?

USER: My trip dates are 02/17 and 02/19.

ASSISTANT: Please share me your origin airport code?

USER: My source is from New York, NY - EWR.

ASSISTANT: Do you have any other specification?

USER: I need a connecting flight.

ASSISTANT: Unfortunately there is no flight on your details.

USER: Ok, no issues. Thanks for your help and support.

ASSISTANT: Thank you so much for choosing us.