You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: Charles Mitchell here.

ASSISTANT: Nice to meet you Charles. Welcome to flight booking agency.

USER: Will you find a flight from SFO to IAD?

ASSISTANT: Sure, I will help you with that. Can you please provide your preferable dates of travelling?

USER: My departure date is 10/30 and return date is 11/01.

ASSISTANT: Ok, please wait a moment to check the flights.

USER: Ok, make sure my connections limit is 1.

ASSISTANT: Sorry to inform you that, there are no flights available to your locations with your requested dates of travelling.

USER: So sad for that. Anyway, thank you for the information.

ASSISTANT: Thank you for approaching us, have a great day.