You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Myself Thomas Baker.

ASSISTANT: How may I assist you today? Nice to meet you Thomas.

USER: I have planned a trip with my ex-colleagues who are staying at Atlanta, can you help me to book a ticket from  ATL to ORD. My travelling dates are 08/26 to 08/28.

ASSISTANT: Sure, please wait for a minute.

USER: Ok.

ASSISTANT: Thanks for your waiting. As per your details there is a flight to book your ticket with flight number 1018. Shall I proceed?

USER: If fare is 200 book it.

ASSISTANT: Your ticket has been booked with airline Delta and price 100. Have a nice journey.

USER: Thank you.

ASSISTANT: It's my pleasure.