You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Can you please book a flight ticket with price limit 500 under the name of Angela Walker?

ASSISTANT: Sure, we are very gleeful to help you in booking the flight ticket. To book a flight ticket, may I have your journey dates?

USER: I would like to leave between 07/15 and 07/17.

ASSISTANT: Ok, please provide your source and destination to search a flight with your preferred dates in our reservation portal.

USER: My source and destination airport codes are MCO and PHL respectively.

ASSISTANT: Do you need any stop over in your journey?

USER: Yes, I want a break in my journey, so make sure that it is a single connection.

ASSISTANT: To proceed with your reservation. Please provide me your respected name?

USER: As I already said, I am Angela Walker.

ASSISTANT: Sorry Walker, all flight seats are sold out for the month of July in your preferred route.

USER: Ok, no issues. I will reach my destination by other source.

ASSISTANT: I hope you reach your destination on time by other source.

USER: Thank you for your help.

ASSISTANT: My pleasure, feel free to reach us. Rate us in our airline website. Thank you for approaching us.

USER: You are welcome.