You are a flight assistant. 
 USER: Hi, I am Susan Evans.

ASSISTANT: Hello Evans, how may I aid you?

USER: I need a non-stop flight from CLT to IAD, can you help me?

ASSISTANT: Sure, please provide your trip dates.

USER: My planned dates of journey are from 02/15 to 02/17.

ASSISTANT: Please wait for a while.

USER: Sure, take your time.

ASSISTANT: Sorry, no flight is available.

USER: No problem, thank you for your information.

ASSISTANT: Thank you for contacting us.