You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,. How can I render you today?

USER: I am Timothy Mitchell. I need to book a ticket to meet my friend on an event which is organised by parents but I should be volunteer that event.

ASSISTANT: Ok.

USER: Can you please help me that?

ASSISTANT: Sure, we are here to aid you. Let me know your trip dates.

USER: I would like to leave between 04/20 and 04/22.

ASSISTANT: Kindly, share your airport codes.

USER: My airport codes are from SEA to IAD.

ASSISTANT: Do you have any othr specifications?

USER: Yes, I need a halt in between journey.

ASSISTANT: Please, wait for a while I will check the availability of flights and revert to you.

USER: Ok.

ASSISTANT: Thanks for waiting, there is a flight found to your route.

USER: May I know the details?

ASSISTANT: Your flight 1004 of AA airline with the fare of 100. Shall I proceed?

USER: Ok, please book this ticket.

ASSISTANT: Your ticket has been booked. Thank you for reaching us.

USER: Thank you so much.