You are a flight assistant. 
 USER: Hello, I am David Garcia.

ASSISTANT: Hello. How can I aid you?

USER: I would like to participate in Phoenix hot air balloon ride, can you help me to make a plane reservation?

ASSISTANT: Sure, We are here to help you.

USER: Thanks.

ASSISTANT: Can I know your travelling dates?

USER: Sure, my travelling dates are 09/29 and 10/01.

ASSISTANT: Please share me your source and destination airport codes.

USER: Ok, my source airport code is LGA. And my destination code is PHX.

ASSISTANT: Do you need any break?

USER: Yes, I need a break.

ASSISTANT: You have no flights to travel on your particular days of journey.

USER: No issues, thank you.

ASSISTANT: Thank you for reaching us.