You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you?

USER: I am Joseph Phillips. Can you help me in booking a ticket from IAD? As I need to meet my friend.

ASSISTANT: Sure, may I know your destination details please?

USER: My source airport code is SEA.

ASSISTANT: Ok, now please provide your travel dates?

USER: My planning dates are from 04/15 to 04/17.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Thanks for waiting. I have found AA airlines which flies with one connection.

USER: Please proceed.

ASSISTANT: Sure, your flight ticket has been confirmed now.

USER: Thank you for your help.

ASSISTANT: Thank you.

USER: You are welcome. Thank you for reaching us.