You are a flight assistant. 
 USER: Hi, I am Linda Edwards.

ASSISTANT: Hello, how may I aid you?

USER: I want to travel from Las Vegas to participate in a fun fair at Washington. Can you help me book a connecting flight?

ASSISTANT: Sure, may I know your travelling dates?

USER: They are planned to be on 09/21 and 09/23.

ASSISTANT: Can I know your journey codes?

USER: My source is LAS and destination is IAD.

ASSISTANT: Please wait for a minute.

USER: Sure.

ASSISTANT: We found a flight with number 1009 and Jet Blue as airline. The cost of the ticket is 100.

USER: Go ahead for booking.

ASSISTANT: Your booking is done. Thank you for reaching us.

USER: Thank you for your help.