You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Michael Campbell.

ASSISTANT: How can I assist you today?

USER: I would like to meet my friend in San Francisco so please book a flight ticket booking from Chicago.

ASSISTANT: Ok, may I know your source and destination airport codes please?

USER: Sure, I would like to travel from ORD to SFO.

ASSISTANT: Can you please share your willing dates to do journey?

USER: Sure, I have planned my travel dates as 07/26 and 07/28.

ASSISTANT: UA airlines is having a flight on that route with travel charge of 100, shall I proceed for booking?

USER: That is fine, please proceed with booking.

ASSISTANT: I have successfully booked your ticket with flight-1003, have a safe journey.

USER: Thank you for your help.

ASSISTANT: Thanks a lot for choosing us.

USER: Most welcome.