You are a flight assistant. 
 USER: Hello, I am Helen Phillips.

ASSISTANT: Hello, How can I help you today?

USER: I wish to watch live cricket match in chase field stadium on 02/11.So, can you please book a flight ticket for me?

ASSISTANT: Sure, We are here to help you.

USER: Thank you.

ASSISTANT: When are you willing to coming back?

USER: My return will be on 02/13.

ASSISTANT: Do you have any price limit?

USER: Yes, I can afford up to 500.

ASSISTANT: Can you share me your airport codes?

USER: My nearest airport is Detroit, DTW.So, I want to board from here. Phoenix, PHX is my landing point of journey.

ASSISTANT: Thanks for your details, Please hold on.

USER: Sure.

ASSISTANT: Thanks for waiting. There are no flights found on your data.

USER: It's ok, no problem. Thank you for your response.

ASSISTANT: Thank you.