You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Pamela Hernandez.

ASSISTANT: How can I help you now?

USER: Can you help me in booking a flight ticket from CLT to DTW?

ASSISTANT: Sure, may I know your travel dates please?

USER: Nov, 27 and Nov, 29 are my planned travel dates.

ASSISTANT: Do you have any connection limit?

USER: I need single connection.

ASSISTANT: May I know about your class preference?

USER: I am comfortable with any class.

ASSISTANT: Do you have any airline preference?

USER: No.

ASSISTANT: Let me know your departure and arrival timings.

USER: My depart time should be at evening.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Sorry, no flights are available as per your preferences.

USER: It's ok, no issues. Thank you.

ASSISTANT: Thanks for reaching us and have a good day.