You are a flight assistant. 
 USER: Hi, I am Charles Carter.

ASSISTANT: Hello, How can I support you?

USER: I want to attend a baby shower program of my sister at San Francisco, can you please avail a flight ticket?

ASSISTANT: Sure, May I know your dates of travelling?

USER: My dates of travelling is from 05/03 to 05/05.

ASSISTANT: Let me know your source and destination airport codes.

USER: My source and destination airport codes are MI-DTW and CA-SFO.

ASSISTANT: Do you have any specifications?

USER: I want a single connection. Price should not exceed 5000.

ASSISTANT: Unfortunately there is no connecting flights available with your criteria.

USER: Ok, no problem. Thank you for giving information.

ASSISTANT: Thank you for contacting us. Have a good day.