You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,.

USER: I am Laura Clark.

ASSISTANT: How can I help you for the day?

USER: Can you please book a ticket for me as I am planning to meet my friend at San Francisco, SFO?

ASSISTANT: Sure, I am gleeful to help you.

USER: Thank you.

ASSISTANT: Please mention your planned dates?

USER: Travelling dates are 06/20 to 06/22.

ASSISTANT: Ok, from where you want to board from?

USER: Source code is Washington, IAD.

ASSISTANT: Is there any restriction on fare?

USER: Price limit is 5000.

ASSISTANT: There is a flight from Delta airline of fare 100 and flight number 1006 with one connection. Shall I proceed?

USER: You can proceed.

ASSISTANT: Your flight booking is done.

USER: Thank you.

ASSISTANT: Thanks for opting us.