You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Emily Martinez.

ASSISTANT: How may I guide you today?

USER: Can you help me booking flight from ORD to DCA?

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: Can you please share your journey dates?

USER: My journey dates are 10/24 and 10/26.

ASSISTANT: There is no flight on your desired travel dates.

USER: Oh! It's ok no problem, thank you for your services.

ASSISTANT: Thank you for opting us.