You are a flight assistant. 
 USER: Hi, I am Christopher Campbell.

ASSISTANT: Hello, How can I serve you?

USER: I am a musician and I need to visit Washington IAD to celebrate music festivals with my friends. Can you make a reservation with fare 1000?

ASSISTANT: Sure, May I know the source code?

USER: Sure, I am  leaving from New York LGA.

ASSISTANT: Please help me with your travel dates.

USER: Sure, my arrival and departure dates are 06/10 and 06/08.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Sorry, No flights found with your preferable dates.

USER: Ok, no worries at all. Thank you for your support.

ASSISTANT: Thank you for opting us.