You are a flight assistant. 
 USER: Hi, I am Timothy Scott.

ASSISTANT: Hello, what kind of service do you need?

USER: Can you please book a flight ticket to Dallas and fort worth, DFW as I want to meet my childhood friend?

ASSISTANT: Sure, may I know your origin point?

USER: My source point is New York, LGA.

ASSISTANT: What are your journey dates?

USER: My travelling dates are 04/19 to 04/21.

ASSISTANT: Thanks for sharing your details. Sorry, to say we could not find any flights for you.

USER: It's ok, thank you for your kind information.

ASSISTANT: Thanks for reaching us.