You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I address you?

USER: I would like to visit the Gum Wall place at Seattle with my family, so assist me to make a reservation under the price of 500.

ASSISTANT: Sure, let me know your good name.

USER: Sure, I am Donna Hernandez.

ASSISTANT: Can you please provide your travelling dates?

USER: My travelling dates are 07/05 to 07/07.

ASSISTANT: Kindly provide your journey codes.

USER: My journey codes are LGA - SEA.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: I am sorry to inform that there is no flight found matching with your requirements.

USER: No problem, thanks for your information.

ASSISTANT: Thanks for reaching us.