You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. Do you need any assistance from us?

USER: Myself Janet Garcia. I am looking to book a flight ticket with single connection to meet my friend in middle of my journey. Can you help me for that?

ASSISTANT: Sure, please tell us on which dates you need booking?

USER: My travelling dates are 11/18 and 11/20.

ASSISTANT: Ok, please tell us your airport codes.

USER: My airport codes are DCA and DEN.

ASSISTANT: Ok, please allow me a moment. Garcia, there are no flights  found on your requested travelling dates.

USER: That's ok, thank you for checking.

ASSISTANT: My pleasure.