You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am  Charles Parker here.

ASSISTANT: Charles Parker. How may I help you?

USER: Can you please help me in booking a flight ticket from SFO to BOS?

ASSISTANT: Sure, can you provide me with the travel dates?

USER: My travel dates are from June 01 and June 03.

ASSISTANT: give me a moment.

USER: Sure, take your own time.

ASSISTANT: Sorry, No flights found for this search.

USER: Ok, not an issue.

ASSISTANT: Thank you for approaching us.

USER: Anyway, thank you for the information.