You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Angela Parker.

ASSISTANT: How can I help you at this moment?

USER: Can you please book a flight ticket from DFW to PHL? As I need to attend a marriage function in Philadelphia.

ASSISTANT: Sure, I am gleeful to help you with this.

USER: Thank you.

ASSISTANT: Can you please provide your desired travel dates to proceed further?

USER: Sure, I need to travel on dates of 07/07 and 07/09.

ASSISTANT: Give me a moment please.

USER: Sure, take your time.

ASSISTANT: Angela Parker, there is no flight service available on this route on your provided dates.

USER: Oh! Anyway, thank you for your time.

ASSISTANT: Thank you for contacting us.