You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. Good Evening. What can I do for you?

USER: A very good evening. I am Dorothy Smith, I have searched a flight with in fare limit  1000 but I did not get any flight ticket with that fare to reserve. So can you please help me with that?

ASSISTANT: Sure, I will help you and check with your budget limit. May I know your destination location?

USER: Ok, sure. I would like to visit Heard museum in Phoenix. So, please consider my destination code as PHX.

ASSISTANT: Can you share your current location then I will find best airlines for you?

USER: I am planning to start my journey from Los Angeles. So, the current airport code is LAX.

ASSISTANT: When you are planning to move from LAX?

USER: I am planning to leave from LAX on 05/08 date.

ASSISTANT: Ok, can I know you like to book your return ticket also?

USER: Yes, I would like to book my return ticket on 05/10 date.

ASSISTANT: Ok, please wait for a while. I will check and let you know best airline.

USER: Ok, sure. I will wait for your response.

ASSISTANT: Sorry Dorothy, there is no flights available on this dates due to heavy ticket booking.

USER: That's fine. I will plan my trip in other dates. Thank you for your assistance.

ASSISTANT: It's my pleasure. Have a great day.